1. Intramural Research Program in Reproductive and Adult Endocrinology (V.B.P., S.N.K., V.H.V., L.M.N.), Bethesda, Maryland 20892
2. Program in Developmental Endocrinology and Genetics (K.A.C.), Bethesda, Maryland 20892
3. Eunice Kennedy Shriver National Institute of Child Health and Human Development, and Biostatistics and Clinical Epidemiology Service (D.K.), Bethesda, Maryland 20892
4. Office of Biostatistics Research (J.F.T.), Division of Cardiovascular Sciences, National Heart Lung and Blood Institute, Bethesda, Maryland 20892
5. Division of Nuclear Medicine (J.C.R.), Warren G. Magnuson Clinical Center, Bethesda, Maryland 20892