Department of Pediatrics, University of California San Francisco, University of California, Los Angeles (UCLA) - Department of Pediatrics, University of California, Los Angeles (UCLA) - Division of General Internal Medicine, University of California, Los Angeles (UCLA) - Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles (UCLA) - Department of Computational Medicine, University of California, Los Angeles (UCLA) - Department of Pediatrics, Harvard University - Department of Cardiology, University of Pennsylvania - Department of Anesthesiology and Critical Care Medicine, Department of Pediatrics, University of California San Francisco, University of California, Los Angeles (UCLA) - Division of General Internal Medicine, Washington University in St. Louis - Department of Anesthesiology, Division of Pulmonary and Critical Care, University of Toronto - Department of Surgery, Harvard University - Department of Pediatrics, University of California, Los Angeles (UCLA) - Department of Pediatrics and affiliation not provided to SSRN

University of California, Berkeley - Department of Molecular & Cell Biology, Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children’s Hospital Colorado, Stanford University - Chan Zuckerberg Biohub, University of Colorado at Denver - Department of Emergency Medicine, Chan Zuckerberg Initiative, Gothenburg Global Biodiversity Centre, UCSF Division of Infectious Diseases, Department of Medicine, UCSF, Stanford University - Chan Zuckerberg Biohub, Stanford University - Chan Zuckerberg Biohub, Stanford University - Chan Zuckerberg Biohub, Department of Biostatistics and Informatics, University of Colorado, Colorado School of Public Health, Department of Pediatrics, Section of Pulmonary Medicine, University of Colorado School of Medicine, University of Colorado at Denver - Department of Pediatrics, Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children’s Hospital Colorado, Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children’s Hospital Colorado, Department of Pediatrics, Sections of Emergency Medicine and Hospital Medicine, University of Colorado School of Medicine, University of Utah, University of Utah, University of Colorado at Denver - Department of Pediatrics, Department of Pediatrics, Section of Critical Care Medicine, University of Colorado School of Medicine and Children’s Hospital Colorado, Nationwide Children’s Hospital, Anesthesiology and Critical Care Medicine, The Children’s Hospital of Philadelphia, University of Pittsburgh, Department of Pediatrics, Children’s Hospital of Michigan, Central Michigan University, Department of Pediatrics, University of California Los Angeles, Department of Pediatrics, Children’s National Medical Center and George Washington School of Medicine and Health Services, Department of Pediatrics, University of California San Francisco, Princeton University, University of Utah, Department of Pediatrics, University of California San Francisco, Department of Biostatistics and Informatics, University of Colorado, Colorado School of Public Health, University of California, San Francisco (UCSF) - UCSF Medical Center, University of California, San Francisco (UCSF) - Division of Infectious Diseases and Children's Hospital Colorado