1. Department of Obstetrics and Gynecology, School of Medicine Fujita Health University Toyoake Japan
2. Department of Gynecology Nippon Kokan Hospital Kawasaki Japan
3. Department of Obstetrics and Gynecology Toranomon Hospital Tokyo Japan
4. Department of Obstetrics and Gynecology Teikyo University Chiba Medical Center Ichihara Japan
5. Department of Obstetrics and Gynecology Showa University School of Medicine Tokyo Japan
6. Department of Obstetrics and Gynecology Gunma University Graduate School of Medicine Gunma Japan
7. Department of Obstetrics and Gynecology Tokyo Dental College Ichikawa General Hospital Chiba Japan
8. Sho Hospital Tokyo Japan
9. Department of Obstetrics and Gynecology, Graduate School of Medicine Nagoya University Nagoya Japan
10. Department of Obstetrics and Gynecology Kindai University Faculty of Medicine Osaka Japan
11. Department of Obstetrics and Gynecology Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
12. Department of Obstetrics and Gynecology Tokyo Women's Medical University Tokyo Japan
13. Komura Women's Clinic Osaka Japan
14. Department of Obstetrics and Gynecology Kurume University School of Medicine Kurume city Fukuoka Japan
15. Shoyodai Sato Clinic Izumo Japan
16. Department of Obstetrics and Gynecology Aichi Medical University Japan
17. Fukushima Medical Center for Children and Women Fukushima Medical University Fukushima Japan
18. Department of Obstetrics & Gynecology School of Medicine Toho University Tokyo Japan
19. Women's clinic “We TOYAMA” Toyama Japan
20. Department of Obstetrics and Gynecology Kobe University Kobe Japan
21. Department of Obstetrics and Gynecology St. Marianna University School of Medicine Kawasaki Japan
22. Department of Obstetrics and Gynecology University of Toyama Toyama Japan
23. Graduate School of Health Sciences Okayama University Okayama Japan
24. Division of Microbiology, Department of Pathology and Microbiology Nihon University School of Medicine Tokyo Japan
25. Department of Integrated Women's Health St. Luke's International Hospital Tokyo Japan
26. Department of Obstetrics and Gynecology, Graduate School of Medicine Hirosaki University Hirosaki Japan
27. Department of Gynecology Koto Hospital Tokyo Japan
28. Department of Infection Control Kokura Memorial Hospital Kitakyushu Japan
29. Department of Obstetrics and Gynecology, Faculty of Medicine Kyorin University Tokyo Japan
30. Department of Obstetrics and Gynecology Nippon Medical School Tokyo Japan
31. Department of Obstetrics and Gynecology The Jikei University School of Medicine Tokyo Japan
32. Evolution and Reproduction, Medical Mycology Research Center Chiba University Chiba Japan
33. Department of Obstetrics and Gynecology Nagoya City University, Graduate School of Medical Sciences Nagoya Japan
34. Maeda Clinic for Obstetrics and Gynecology Yaizu Japan
35. Department of Gynecology, School of Medicine Fujita Health University Toyoake Japan