1. Division of Endocrinology, Department of Pediatrics, Center for Research in Reproduction, University of Virginia, Charlottesville, Virginia 22908
2. Division of Endocrinology, Department of Internal Medicine, University of Virginia, Charlottesville, Virginia 22908
3. Department of Public Health Sciences, University of Virginia, Charlottesville, Virginia 22908
4. Division of Reproductive Endocrinology and Infertility, Department of Reproductive Medicine, University of California-San Diego, La Jolla, California 92037
5. Division of Endocrinology, Department of Internal Medicine, Center for Research in Reproduction, University of Virginia, Charlottesville, Virginia 22908