1. Division of Neonatology, Department of Pediatrics, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA.
2. Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut, USA.
3. Program for Biomedical Ethics, Yale University School of Medicine, New Haven, Connecticut, USA.
4. Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut, USA.
5. Department of Biostatistics, Yale University School of Medicine, New Haven, Connecticut, USA.
6. Section of Cardiology, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.