1. Division of Clinical Laboratory Science (V.A.L.), School of Medicine, Chapel Hill, North Carolina 27599
2. Department of Epidemiology (M.J.F., G.H.), Gillings School of Global Public Health, Chapel Hill, North Carolina 27599
3. Center for Women's Health Research (C.E.L.), Chapel Hill, North Carolina 27599
4. Institute for Medicine and Public Health (A.G., T.L.E., K.E.H.), Division of Epidemiology, Nashville, Tennessee 37203
5. Division of Endocrinology, Diabetes, and Metabolism (R.D.J.), Department of Internal Medicine and Ohio State University Center for Women's Health, The Ohio State University, Columbus, Ohio 43210
6. Division of Preventive Medicine (J.E.M.), Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115
7. Cecil G. Sheps Center for Health Services Research (R.S.), University of North Carolina, Chapel Hill, North Carolina 27599
8. Department of Obstetrics and Gynecology (K.E.H.), Vanderbilt University Medical School, Vanderbilt University, Nashville, Tennessee 37203