[1
]
Department of Pediatrics, Emory University School of Medicine, Children's Healthcare
of Atlanta, Atlanta, Georgia.
[2
]
Social, Statistical, and Environmental Sciences Unit, RTI International, Research
Triangle Park, North Carolina.
[3
]
Department of Pediatrics, University of Iowa, Iowa City.
[4
]
Department of Pediatrics, Rainbow Babies and Children's Hospital, Case Western Reserve
University, Cleveland, Ohio.
[5
]
Division of Neonatology, University of Alabama at Birmingham.
[6
]
Department of Pediatrics, Wayne State University, Detroit, Michigan.
[7
]
Department of Pediatrics, Women and Infants Hospital, Brown University, Providence,
Rhode Island.
[8
]
Center for Perinatal Research, Department of Pediatrics, Nationwide Children's Hospital,
The Ohio State University, Columbus.
[9
]
Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford
University School of Medicine, Palo Alto, California10Lucile Packard Children's Hospital,
Palo Alto, California.
[10
]
Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas.
[11
]
Social, Statistical, and Environmental Sciences Unit, RTI International, Rockville,
Maryland.
[12
]
Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
[13
]
Department of Pediatrics, Indiana University School of Medicine, Indianapolis.
[14
]
Department of Pediatrics, University of Texas Medical School at Houston.
[15
]
Department of Pediatrics, Duke University, Durham, North Carolina.
[16
]
University of New Mexico Health Sciences Center, Albuquerque.
[17
]
University of Rochester School of Medicine and Dentistry, Rochester, New York.
[18
]
Department of Pediatrics, University of Pennsylvania, Philadelphia.
[19
]
Department of Pediatrics, Children's Mercy Hospital, Kansas City, Missouri.
[20
]
Department of Pediatrics, University of California, Los Angeles.
[21
]
Eunice Kennedy Shriver National Institute of Child Health and Human Development, National
Institutes of Health, Bethesda, Maryland.