| Affiliation: | a Division of Neonatal-Developmental Medicine, Stanford University, Stanford, CA
b Statistics and Epidemiology Unit, RTI International, Research Triangle Park, NC
c Statistics and Epidemiology Unit, RTI International, Rockville, MD
d Department of Pediatrics, Emory University School of Medicine, Atlanta, GA
e Department of Pediatrics, Case Western Reserve University, Cleveland, OH
f Department of Pediatrics, Wayne State University, Detroit, MI
g Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, IA
h Department of Pediatrics, Brown University, Providence, RI
i Pregnancy and Perinatology Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD |
