[1
]
Newborn Medicine and Respiratory Diseases, Boston Children's Hospital, Boston, Massachusetts.
[2
]
Department of Pediatrics, Uniformed Services University of Health Sciences, Bethesda,
Maryland.
[3
]
Department of Pediatrics, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire.
[4
]
Department of Pediatrics, Boston University School of Medicine, Boston, Massachusetts5Slone
Epidemiology Center at Boston University, Boston, Massachusetts.
[5
]
Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts.
[6
]
Department of Neonatology, University of Tübingen, Tübingen, Germany.
[7
]
American SIDS Institute, Naples, Florida.