[1] Univ Alabama Birmingham, Sch Publ Hlth, Dept Epidemiol & Int Hlth, Birmingham, AL 35294 USA
[2] Jefferson Cty Dept Hlth, Birmingham, AL USA
[3] Madison Cty Hlth Dept, Huntsville, AL USA
[4] NICHHD, Ctr Populat Res, Bethesda, MD 20892 USA
[5] NCI, Community Oncol & Prevent Trials Res Grp, Div Canc Prevent, Bethesda, MD 20892 USA
[6] CDC, Ctr Dis Control & Prevent, Natl Ctr Chron Dis Control & Prevent, Div Reprod Hlth,Womens Hlth & Fertil Branch, Atlanta, GA 30333 USA
[7] Univ Alabama Birmingham, Sch Med, Dept Med, Birmingham, AL USA
[8] Jefferson Cty Dept Hlth, Birmingham, AL USA