1. Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology University of Michigan Ann Arbor Michigan
2. Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology Northwestern University Feinberg School of Medicine Chicago Illinois
3. Cancer and Blood Diseases Institute Cincinnati Children's Hospital Medical Center Cincinnati Ohio
4. Department of Pediatrics University of Cincinnati School of Medicine Cincinnati Ohio
5. Department of Urology Weill Cornell Medicine New York New York
6. MRC Centre for Reproductive Health University of Edinburgh Edinburgh UK
7. Aflac Cancer and Blood Disorders Center Children's Healthcare of Atlanta Atlanta Georgia
8. Department of Pediatrics Emory University School of Medicine Atlanta Georgia
9. Division of Pediatric Hematology, Oncology, and Bone Marrow Transplantation Cleveland Clinic Foundation Cleveland Ohio
10. Melbourne IVF East Melbourne Victoria Australia
11. The Royal Women's Hospital Parkville Victoria Australia
12. Department of Reproductive Medicine, Division of Gynecology and Reproduction Karolinska University Hospital Solna Sweden
13. Division of Pediatric Hematology/Oncology Cornell University Joan and Sanford I Weill Medical College New York New York
14. Aflac Cancer Center Children's Healthcare of Atlanta Atlanta Georgia
15. Department of Pediatrics, Division of Hematology/Oncology and Endocrinology Emory University School of Medicine Atlanta Georgia