1. Department of Pediatrics, Division of Pediatric Critical Care Medicine, Stanford University, Palo Alto, CA.
2. Department of Pediatrics, Division of Pediatric Critical Care Medicine, Sainte-Justine University Hospital, Montreal, QC, Canada.
3. Division of Pediatric Critical Care Medicine and Center for Blood Oxygen Transport and Hemostasis, University of Maryland School of Medicine, Baltimore, MD.
4. Department of Pediatrics, University of Utah, Salt Lake City, UT.
5. Department of Epidemiology and Biostatistics, McGill University, Montreal, QC, Canada.
6. Department of Health Policy, London School of Economics, London, United Kingdom.
7. Department of Pediatrics, Division of Critical Care Medicine, Nationwide Children’s Hospital and The Ohio State University College of Medicine, Columbus, OH.
8. Department of Surgery, Pittsburgh University, Pittsburgh, PA.
9. Department of Critical Care Medicine, Pittsburgh University, Pittsburgh, PA.