1. Department of Obstetrics and Gynecology, University of Pennsylvania, Philadelphia, Pennsylvania
2. Department of Obstetrics and Gynecology, University of Oklahoma Health Sciences Center, Oklahoma City
3. Department of Obstetrics and Gynecology, University of Illinois at Chicago
4. Department of Obstetrics and Gynecology, Atrium Health, Charlotte, North Carolina
5. Department of Obstetrics and Gynecology, University of North Carolina, Chapel Hill
6. Department of Obstetrics and Gynecology, University of California at San Francisco
7. Department of Obstetrics and Gynecology, Northwestern University, Chicago, Illinois
8. Department of Obstetrics and Gynecology, University of Rochester, Rochester, New York
9. Department of Obstetrics and Gynecology and Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan
10. Department of Obstetrics & Gynecology, Prisma Health, University of South Carolina School of Medicine–Greenville
11. Department of Obstetrics and Gynecology, University of Colorado and Denver Health Medical Center, Denver
12. Department of Obstetrics and Gynecology, Augusta University, Augusta, Georgia
13. Department of Biostatistics and Informatics, Colorado School of Public Health, Aurora
14. Department of Obstetrics and Gynecology, University of Colorado, Denver
15. Fertility and Infertility Branch, National Institute of Child Health and Human Development, Rockville, Maryland
16. Department of Biostatistics, Yale University, New Haven, Connecticut
17. for the Reproductive Medicine Network