1. Endocrine Unit, Massachusetts General Hospital, Boston, MA
2. Biostatistics Center, Massachusetts General Hospital, Boston, Massachusetts
3. Division of Geriatrics, UCLA School of Medicine, Los Angeles, California
4. Department of Clinical Pathology, Massachusetts General Hospital, Boston, Massachusetts
5. Pediatric Surgical Research Laboratories, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
6. Department of Epidemiology, University of Michigan, Ann Arbor, Michigan
7. Department of Psychiatry and Connors Center for Women’s Health and Gender Biology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
8. Ansh Labs, Webster, Texas
9. Department of Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania
10. Central Ligand Assay Satellite Services (CLASS) Laboratories, University of Michigan, Ann Arbor, Michigan
11. Department of Obstetrics and Gynecology and Reproductive Medicine, Stony Brook University, Stony Brook, New York
12. Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology, University of Michigan, Ann Arbor, Michigan
13. Department of Obstetrics and Gynecology, University of Colorado Medical School, Aurora, Colorado