부산대학교 도서관

Dalla, C.E.R.; da Silva, W.B.; Dutra, J.C.S.; Colaço, M.J.

In: Engineering Analysis with Boundary Elements. (Engineering Analysis with Boundary Elements, July 2024, 164)

Dalla, C.E.R.; da Silva, W.B.; Dutra, J.C.S.; Colaço, M.J.

In: Computers and Mathematics with Applications. (Computers and Mathematics with Applications, 15 June 2024, 164:131-138)

Colaço, M.J.; Dalla, C.E.R.; Silva, W.B.; Dutra, J.C.S.

In: International Communications in Heat and Mass Transfer. (International Communications in Heat and Mass Transfer, April 2022, 133)

Dalla, C.E.R.; da Silva, W.B.; Fortunato, T.B.; Dutra, J.C.S.; da Costa, J.M.J.; Colaço, M.J.

In: International Symposium on Advances in Computational Heat Transfer, Proceedings of CHT-21 ICHMT International Symposium on Advances in Computational Heat Transfer, 2021. (International Symposium on Advances in Computational Heat Transfer, 2021, :131-149)

Kopperschmidt, C.E.P.; Margotto, B.H.M.; Colaço, M.J.; Dalla, C.E.R.; da Silva, W.B.; Dutra, J.C.S.

In: International Symposium on Advances in Computational Heat Transfer, Proceedings of CHT-21 ICHMT International Symposium on Advances in Computational Heat Transfer, 2021. (International Symposium on Advances in Computational Heat Transfer, 2021, :351-363)

Berner, Eta S.; Webster, George D.; Shugerman, Alwyn A.; Jackson, James R.; Algina, James; Baker, Alfred L.; Ball, Eugene V.; Cobbs, C. Glenn; Dennis, Vincent W.; Frenkel, Eugene P.; Hudson, Leonard D.; Mancall, Elliott L.; Rackley, Charles E.; Taunton, O. David.

The New England Journal of Medicine. Jun 23, 1994 330(25):1792-1796

Son MBF; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Murray N; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Friedman K; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Young CC; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Newhams MM; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Feldstein LR; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Loftis LL; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Tarquinio KM; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Singh AR; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Heidemann SM; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Soma VL; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Riggs BJ; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Fitzgerald JC; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Kong M; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Doymaz S; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Giuliano JS Jr; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Keenaghan MA; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Hume JR; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Hobbs CV; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Schuster JE; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Clouser KN; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Hall MW; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Smith LS; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Horwitz SM; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Schwartz SP; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Irby K; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Bradford TT; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Maddux AB; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Babbitt CJ; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Rowan CM; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; McLaughlin GE; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Yager PH; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Maamari M; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Mack EH; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Carroll CL; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Montgomery VL; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Halasa NB; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Cvijanovich NZ; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Coates BM; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Rose CE; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Newburger JW; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Patel MM; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).; Randolph AG; From the Division of Immunology (M.B.F.S.), and the Departments of Cardiology (K.F., J.W.N.) and Anesthesiology, Critical Care, and Pain Medicine (C.C.Y., M.M.N., A.G.R.), Boston Children's Hospital, the Division of Pediatric Critical Care Medicine, MassGeneral Hospital for Children (P.H.Y.), and the Departments of Anesthesia (A.G.R.) and Pediatrics (M.B.F.S., K.F., P.H.Y., J.W.N., A.G.R.), Harvard Medical School - all in Boston; the COVID-19 Response Team, Centers for Disease Control and Prevention (N.M., L.R.F., C.E.R., M.M.P.), and the Division of Critical Care Medicine, Department of Pediatrics, Emory University School of Medicine, Children's Healthcare of Atlanta (K.M.T.) - both in Atlanta; the Commissioned Corps of the U.S. Public Health Service, Rockville (L.R.F., M.M.P.), and the Department of Anesthesiology and Critical Care Medicine, Division of Pediatric Anesthesiology and Critical Care Medicine, Johns Hopkins School of Medicine, Baltimore (B.J.R.) - both in Maryland; the Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston (L.L.L.); the Department of Pediatrics, Division of Critical Care Medicine, University of Texas Southwestern, Children's Medical Center of Dallas, Dallas (M.M.); the Pediatric Critical Care Division, Maria Fareri Children's Hospital at Westchester Medical Center and New York Medical College, Valhalla (A.R.S.), the Division of Pediatric Infectious Diseases, Department of Pediatrics, New York University Grossman School of Medicine, New York (V.L.S.), and the Division of Pediatric Critical Care, Department of Pediatrics, State University of New York Downstate Health Sciences University (S.D.), and Pediatric Critical Care, New York City Health and Hospitals, Kings County Hospital (M.A.K.), Brooklyn - all in New York; the Department of Pediatrics, Division of Pediatric Critical Care Medicine, Central Michigan University, Detroit (S.M. Heidemann); the Division of Critical Care, Department of Anesthesiology and Critical Care, University of Pennsylvania Perelman School of Medicine, Philadelphia (J.C.F.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Alabama at Birmingham, Birmingham (M.K.); the Department of Pediatrics, Division of Critical Care, Yale University School of Medicine, New Haven (J.S.G.), and the Division of Critical Care, Connecticut Children's, Hartford (C.L.C.) - both in Connecticut; the Division of Pediatric Critical Care, M Health Fairview University of Minnesota Masonic Children's Hospital, Minneapolis (J.R.H.); the Department of Pediatrics, Department of Microbiology, Division of Infectious Diseases, University of Mississippi Medical Center, Jackson (C.V.H.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Children's Mercy Kansas City, Kansas City, MO (J.E.S.); the Department of Pediatrics, Joseph M. Sanzari Children's Hospital at Hackensack University Medical Center, Hackensack (K.N.C.), and the Department of Pediatrics, Division of Pediatric Critical Care, Bristol-Myers Squibb Children's Hospital at Robert Wood Johnson Medical School, Rutger's University, New Brunswick (S.M. Horwitz) - both in New Jersey; the Division of Critical Care Medicine, Department of Pediatrics, Nationwide Children's Hospital, Columbus, OH (M.W.H.); the Department of Pediatrics, Division of Pediatric Critical Care Medicine, University of Washington, Seattle (L.S.S.); the Department of Pediatrics, University of North Carolina Children's Hospital, Chapel Hill (S.P.S.); the Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children's Hospital, Little Rock (K.I.); the Department of Pediatrics, Division of Cardiology, Louisiana State University Health Sciences Center and Children's Hospital of New Orleans, New Orleans (T.T.B.); the Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora (A.B.M.); the Division of Pediatric Critical Care, Miller Children's and Women's Hospital of Long Beach, Long Beach (C.J.B.), and the Division of Critical Care Medicine, University of California San Francisco Benioff Children's Hospital Oakland, Oakland (N.Z.C.) - both in California; the Division of Pediatric Critical Care Medicine, Department of Pediatrics, Indiana University School of Medicine, Riley Hospital for Children, Indianapolis (C.M.R.); the Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Miami Miller School of Medicine, Miami (G.E.M.); the Division of Pediatric Critical Care Medicine, Medical University of South Carolina, Charleston (E.H.M.); the Department of Pediatrics, University of Louisville and Norton Children's Hospital, Louisville, KY (V.L.M.); the Division of Pediatric Infectious Diseases, Department of Pediatrics, Vanderbilt University Medical Center, Nashville (N.B.H.); and the Division of Critical Care Medicine, Department of Pediatrics, Northwestern University Feinberg School of Medicine, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (B.M.C.).

Publisher: Massachusetts Medical Society Country of Publication: United States NLM ID: 0255562 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1533-4406 (Electronic) Linking ISSN: 00284793 NLM ISO Abbreviation: N Engl J Med Subsets: MEDLINE

Vemulapalli S; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Carroll JD; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Mack MJ; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Li Z; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Dai D; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Kosinski AS; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Kumbhani DJ; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Ruiz CE; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Thourani VH; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Hanzel G; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Gleason TG; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Herrmann HC; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Brindis RG; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).; Bavaria JE; From the Division of Cardiology, Duke University Medical Center (S.V.), the Duke Clinical Research Institute (S.V., Z.L., D.D., A.S.K.), and the Department of Biostatistics and Bioinformatics, Duke University (A.S.K.) - all in Durham, NC; the Division of Cardiology, Department of Medicine, University of Colorado, Aurora (J.D.C.); Baylor Scott and White Heart Hospital, Plano (M.J.M.), and the Division of Cardiology, Department of Medicine, University of Texas Southwestern Medical Center, Dallas (D.J.K.) - both in Texas; the Division of Cardiology, Hackensack Meridian School of Medicine at Seton Hall University, Hackensack, NJ (C.E.R.); the Division of Cardiothoracic Surgery, Medstar Heart and Vascular Institute and Georgetown University, Washington, DC (V.H.T.); the Division of Cardiology, William Beaumont Hospital, Royal Oak, MI (G.H.); the University of Pittsburgh School of Medicine, Pittsburgh (T.G.G.); the Divisions of Cardiology (H.C.H.) and Cardiothoracic Surgery (J.E.B.), University of Pennsylvania, Philadelphia; and the Philip R. Lee Institute of Health Policy Studies, University of California, San Francisco, San Francisco (R.G.B.).

Publisher: Massachusetts Medical Society Country of Publication: United States NLM ID: 0255562 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1533-4406 (Electronic) Linking ISSN: 00284793 NLM ISO Abbreviation: N Engl J Med Subsets: MEDLINE

Ramirez CE; From the Department of Medicine, Division of Clinical Pharmacology and the Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, Tennessee (C.E.R., L.E.O., A.C.A., A.G., A.D., S.R.R., D.R., I.B., C.A.S.); and Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee (L.C.).; Okamoto LE; From the Department of Medicine, Division of Clinical Pharmacology and the Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, Tennessee (C.E.R., L.E.O., A.C.A., A.G., A.D., S.R.R., D.R., I.B., C.A.S.); and Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee (L.C.).; Arnold AC; From the Department of Medicine, Division of Clinical Pharmacology and the Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, Tennessee (C.E.R., L.E.O., A.C.A., A.G., A.D., S.R.R., D.R., I.B., C.A.S.); and Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee (L.C.).; Gamboa A; From the Department of Medicine, Division of Clinical Pharmacology and the Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, Tennessee (C.E.R., L.E.O., A.C.A., A.G., A.D., S.R.R., D.R., I.B., C.A.S.); and Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee (L.C.).; Diedrich A; From the Department of Medicine, Division of Clinical Pharmacology and the Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, Tennessee (C.E.R., L.E.O., A.C.A., A.G., A.D., S.R.R., D.R., I.B., C.A.S.); and Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee (L.C.).; Choi L; From the Department of Medicine, Division of Clinical Pharmacology and the Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, Tennessee (C.E.R., L.E.O., A.C.A., A.G., A.D., S.R.R., D.R., I.B., C.A.S.); and Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee (L.C.).; Raj SR; From the Department of Medicine, Division of Clinical Pharmacology and the Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, Tennessee (C.E.R., L.E.O., A.C.A., A.G., A.D., S.R.R., D.R., I.B., C.A.S.); and Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee (L.C.).; Robertson D; From the Department of Medicine, Division of Clinical Pharmacology and the Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, Tennessee (C.E.R., L.E.O., A.C.A., A.G., A.D., S.R.R., D.R., I.B., C.A.S.); and Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee (L.C.).; Biaggioni I; From the Department of Medicine, Division of Clinical Pharmacology and the Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, Tennessee (C.E.R., L.E.O., A.C.A., A.G., A.D., S.R.R., D.R., I.B., C.A.S.); and Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee (L.C.).; Shibao CA; From the Department of Medicine, Division of Clinical Pharmacology and the Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, Tennessee (C.E.R., L.E.O., A.C.A., A.G., A.D., S.R.R., D.R., I.B., C.A.S.); and Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, Tennessee (L.C.). cyndya.shibao@vanderbilt.edu.

Publisher: Lippincott, Williams & Wilkins Country of Publication: United States NLM ID: 7906255 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1524-4563 (Electronic) Linking ISSN: 0194911X NLM ISO Abbreviation: Hypertension Subsets: MEDLINE