Reddy, Uma M. MD, MPH*; Branum, Amy M. MSPH‡; Klebanoff, Mark A. MD, MPH†
From the *Pregnancy and Perinatology Branch, National Institute of Child Health and Human Development, Bethesda, Maryland; †Division of Epidemiology, Statistics, and Prevention Research, National Institute of Child Health and Human Development, Bethesda, Maryland; and ‡Infant, Child and Women's Health Statistics Branch, National Center for Health Statistics, Centers for Disease Control and Prevention, Atlanta, Georgia.
Source of the study: Collaborative Perinatal Project.
Address reprint requests to: Uma M. Reddy, MD, MPH, 6100 Executive Boulevard, Room 4B03F, Bethesda, MD 20892–7510; e-mail: [email protected].
Received August 13, 2004. Received in revised form October 27, 2004. Accepted December 2, 2004.