1. Perinatal Institute, Division of Neonatology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio and Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio;
2. Department of Biostatistics, University of Arkansas for Medical Sciences, Little Rock, Arkansas;
3. Department of Pediatrics, University of Louisville, Louisville, Kentucky;
4. Larner College of Medicine at the University of Vermont, Burlington, Vermont;
5. Alaska Native Tribal Health Consortium, Anchorage, Alaska;
6. Rainbow Babies and Children’s Hospital, Cleveland, Ohio;
7. Department of Pediatrics, Women and Infant’s Hospital, Providence, Rhode Island;
8. Department of Pediatrics, West Virginia University School of Medicine, Morgantown, West Virginia;
9. Children’s Hospital at Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire;
10. RTI International, Rockville, Maryland;
11. University of New Mexico Health Sciences Center, Albuquerque, New Mexico;
12. National Institute of Child Health and Human Development, Bethesda, Maryland and George Mason University, Fairfax, Virginia;
13. Center for the Study of Children at Risk, Department of Pediatrics, Brown Alpert Medical School and Women and Infants Hospital, Providence, Rhode Island;
14. Duke Clinical Research Institute, School of Medicine, Duke University, Durham, North Carolina;
15. Nebraska Medical Center, Omaha, Nebraska;
16. Nationwide Children’s Hospital, College of Medicine, The Ohio State University, Columbus, Ohio;
17. Department of Pediatrics, School of Medicine, West Virginia University, Morgantown, West Virginia; and
18. Environmental Influences on Child Health Outcomes Program, Office of the Director, National Institutes of Health, Rockville, Maryland