1. aBaylor College of Medicine, Section of Critical Care Medicine and Cardiology, Texas Children’s Hospital, Houston, Texas
2. bDivision of Neonatal and Developmental Medicine, Stanford University School of Medicine, Lucile Packard Children’s Hospital, Palo Alto, California
3. cMedical University of South Carolina, Divison of Pediatric Cardiology, Shawn Jenkins Children’s Hospital, Charleston, South Carolina
4. dStanford School of Medicine, Division of Cardiology, Lucile Packard Children’s Hospital, Palo Alto, California
5. eNorthwestern University Feinberg School of Medicine, Division of Neonatology, Pediatric Pulmonary Hypertension Program, Ann and Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois
6. fMayo Clinic College of Medicine and Science, Department of Anesthesiology and Pediatric Critical Care Medicine, Mayo Eugenio Litta Children’s Hospital, Rochester, Minnesota
7. gUniversity of California San Francisco School of Medicine, Division of Critical Care, University of California San Francisco Benioff Children’s Hospital, San Francisco, California