1. Department of Pediatrics, University of New Mexico, Albuquerque, New Mexico
2. Department of Pediatrics, Yale University, New Haven, Connecticut
3. Research Triangle Institute, Research Triangle Park, North Carolina
4. Department of Pediatrics, Indiana University, Indianapolis, Indiana
5. Newborn Center, University of Tennessee, Memphis, Tennessee
6. Division of Neonatal and Perinatal Medicine, Wayne State University, Detroit, Michigan
7. Department of Pediatrics, Emory University, Atlanta, Georgia
8. Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio
9. Joint Program in Neonatology, Harvard University, Boston, Massachusetts
10. National Institute of Child Health and Human Development, Bethesda, Maryland