Defoe, Deidre M. MD, MPH; Power, Michael L. PhD; Holzman, Gerald B. MD; Carpentieri, Andrea MA; Schulkin, Jay PhD
American College of Obstetricians and Gynecologists, Washington, DC.
Address reprint requests to: Michael L. Power, PhD Department of ResearchAmerican College of Obstetricians and Gynecologists 409 12th Street, SW Washington, DC 20024 E-mail: [email protected]
This research is supported by grant MCJ 117016 from the United States Department of Health and Human Services Bureau of Maternal and Child Health, Bethesda, Maryland.
Received November 3, 2000. Received in revised form January 7, 2001. Accepted February 22, 2001.