1. Division of Critical Care Medicine, Department of Pediatrics,
2. Division of Cardiology, Department of Pediatrics,
3. Lane Medical Library, and
4. Lucile Packard Children’s Hospital, Palo Alto, California; and
5. Division of Neonatology, Department of Pediatrics, School of Medicine, Stanford University, Palo Alto, California;
6. Division of Neonatal-Perinatal Medicine, Department of Pediatrics, School of Medicine, Yale University, New Haven, Connecticut