1. Centers for Disease Control and Prevention, Division of Reproductive Health, Atlanta, GA
2. Current affiliation: Centers for Disease Control and Prevention, Division of HIV/AIDS Prevention, Atlanta, GA
3. New York City Department of Health and Mental Hygiene Gotham Center, Bureau of Maternal, Infant and Reproductive Health, Queens, NY
4. Vermont Department of Health, Agency of Human Services, Burlington, VT
5. New York City Department of Health and Mental Hygiene, Bureau of Vital Statistics, New York, NY