1. Division of Reproductive Endocrinology, Department of Obstetrics and Gynecology, University of Maryland School of Medicine (E.Y.A., C.E.R., D.W.P.), Bethesda, Maryland 20892
2. Baltimore, Maryland 21201; the Department of Pediatrics, University of Oregon Health Sciences Center (R.G.R., T.M., M.K.H., S.E.G.), Bethesda, Maryland 20892
3. Portland, Oregon 97201; the Developmental Endocrinology Branch, National Institute of Child Health and Human Development, National Institutes of Health (J.Z., C.A.B.), Bethesda, Maryland 20892