1Division of Pediatric Neurology, Department of Pediatrics, Boston Medical Center, Boston University, Boston, MA
2Department of Neonatology, Wake Forest University, Winston-Salem, NC
3Neuroepidemiology Unit, Department of Neurology, Children's Hospital Boston, Harvard University, Boston, MA, Department of Biostatistics, Harvard School of Public Health, Harvard University, Boston, MA
4Neuroepidemiology Unit, Department of Neurology, Children's Hospital Boston, Harvard University, Boston, MA
5Baystate Medical Center, Tufts University School of Medicine, Springfield, MA
6Department of Neurology, Children's Hospital Boston, Harvard University, Boston, MA, Brigham and Women's Medical Center, Harvard University, Boston, MA
7Massachusetts General Hospital
8Department of Neurology, Children's Hospital Boston, Harvard University, Boston, MA
9University of Chicago, Chicago, IL
10TUFTS-NEW ENGLAND MEDICAL CENTER
11University of Massachusetts Memorial Medical Center, Worcester, MA
12Yale University Medical Center
13East Carolina University,
14University of North Carolina
15DeVos Children's Hospital
16Michigan State University-Sparrow Medical Center
17William Beaumont Hospital, Neonatal Unit, Royal Oak, MI