1. Department of Obstetrics and GynecologyNara Medical University Kashihara Japan
2. Department of Obstetrics and GynecologyShowa University School of Medicine Tokyo Japan
3. Department of Obstetrics and GynecologyNippon Medical School Tokyo Japan
4. Department of Obstetrics and GynecologyKitasato University Kitasato Institute Hospital Tokyo Japan
5. Department of Obstetrics and GynecologyKyoto Prefectural University of Medicine, School of Nursing Kyoto Japan
6. Departments of Obstetrics and GynecologyOsaka University Graduate School of Medicine Suita Japan
7. Department of Obstetrics and Gynecology, Faculty of MedicineSaitama Medical University Saitama Japan
8. Iidabashi Ladies Clinic Tokyo Japan
9. Department of Reproductive Health Nursing, School of Health Science, Faculty of MedicineKagoshima University Kagoshima Japan
10. Department of Obstetrics and GynecologyThe University of Tokyo Tokyo Japan
11. Department of Obstetrics and GynecologyJapanese Red Cross Medical Center Tokyo Japan
12. Department of Obstetrics and GynecologyNiigata City General Hospital Niigata Japan
13. Center for Reproductive Medicine and EndoscopySugiyama Clinic Marunouchi Tokyo Japan
14. Department of Obstetrics and GynecologyTatedebari Sato Hospital Takasaki Japan
15. Udagawa Gynecological Clinic Chiba Japan
16. Department of Obstetrics and GynecologySaitama Medical Center/Saitama Medical University Kawagoe Japan
17. Department of Obstetrics and GynecologyToyama Central Prefectural Hospital Toyama Japan
18. Department of Obstetrics and GynecologyYokohama Rosai Hospital Yokohama Japan
19. Department of Women's HealthTokyo Medical and Dental University Tokyo Japan
20. Division of Gynecologic OncologyNational Hospital Organization, Hokkaido Cancer Center Sapporo Japan
21. Department of Obstetrics and GynecologyAichi Medical University School of Medicine Nagakute Japan
22. Japan Institute of Sports Sciences Tokyo Japan
23. Department of Obstetrics and GynecologyKyoto University Graduate School of Medicine Kyoto Japan
24. Department of Clinical Genomic Medicine. Graduate School of Medicine, Dentistry and Pharmaceutical SciencesOkayama University Okayama Japan
25. Department of Obstetrics and Gynecology, School of MedicineFujita Health University Toyoake Japan
26. Fujii Ladies' Clinic Hiroshima Japan
27. Department of Obstetrics and GynecologyKeio University School of Medicine Tokyo Japan
28. Department of Obstetrics and GynecologyYokohama City University Hospital Yokohama Japan
29. Center for IVF and InfertilityInternational University of Health and Welfare Hospital Nasushiobara Japan
30. Department of Obstetrics and GynecologyUniversity of Toyama Toyama Japan
31. Department of Obstetrics and GynecologyKyorin University School of Medicine Tokyo Japan
32. Maeda Clinic Yaizu Japan
33. Department of Obstetrics and GynecologyGunma University Graduate School of Medicine Maebashi Japan