1. Department of Medical Ethics, Graduate School of Medicine Kyoto University Kyoto Japan
2. Department of Clinical Biostatistics, Graduate School of Medicine Kyoto University Kyoto Japan
3. Department of Obstetrics and Gynecology Showa University School of Medicine Tokyo Japan
4. Division of Clinical and Molecular Genetics, Department of Obstetrics and Gynecology Nagoya City University Graduate School of Medical Sciences Aichi Japan
5. Department of Obstetrics and Gynecology University of Tokushima Faculty of Medicine Tokushima Japan
6. Department of Obstetrics and Gynecology Hokkaido University Graduate School of Medicine Hokkaido Japan
7. Department of Obstetrics and Gynecology National Hospital Organization Kyushu Medical Center Fukuoka Japan
8. Department of Obstetrics and Gynecology Fujita Health University Aichi Japan
9. Department of Obstetrics and Gynecology Ehime University School of Medicine Ehime Japan
10. Department of Clinical Genetics Yokohama City University Hospital Kanagawa Japan
11. Department of Clinical Genetics, School of Medicine Iwate Medical University Iwate Japan
12. Department of Obstetrics and Gynecology Osaka University Graduate School of Medicine Osaka Japan
13. Department of Obstetrics and Gynecology Niigata University Graduate School of Medical and Dental Sciences Niigata Japan
14. Departments of Obstetrics and Gynecology Saitama Medical University School of Medicine Saitama Japan
15. Department of Obstetrics and Gynecology Hyogo College of Medicine Hyogo Japan
16. Department of Obstetrics and Gynecology Nagasaki University Graduate School of Biomedical Sciences Nagasaki Japan
17. Perinatal Medical Center Tokyo Women's Medical University Hospital Tokyo Japan
18. Department of Obstetrics and Gynecology Kobe University Graduate School of Medicine Kobe Japan
19. Department of Genetic Medicine Osaka City General Hospital Osaka Japan
20. Departments of Obstetrics and Gynecology Fukuoka University Hospital Fukuoka Japan
21. Department of Obstetrics and Gynecology Sapporo Medical University Hokkaido Japan
22. Department of Maternal Fetal Medicine Osaka Women's and Children's Hospital Osaka Japan
23. Sanno Hospital Tokyo Japan
24. Department of Molecular Pathology, Faculty of Medicine Oita University Oita Japan
25. Department of Obstetrics and Gynecology Okayama University Graduate School of Medicine Okayama Japan
26. Department of Maternal and Fetal Medicine Tohoku University Graduate School of Medicine, Miyagi Children's Hospital Miyagi Japan
27. Department of Reproductive Medicine Chiba University Graduate School of Medicine Chiba Japan
28. Department of Obstetrics and Gynecology Nippon Medical School Tokyo Japan
29. Department of Obstetrics and Gynecology The Jikei University School of Medicine Tokyo Japan
30. Department of Obstetrics and Gynecology Nara Medical University Nara Japan
31. Department of Obstetrics and Gynecology Kumamoto University Kumamoto Japan
32. Perinatal medical center Shikoku Medical Center for Children and Adults Kagawa Japan
33. Department of Obstetrics and Gynecology Japanese Red Cross Medical Center Tokyo Japan
34. Department of Obstetrics and Gynecology Hiroshima University Hiroshima Japan
35. Division of Counseling for Medical Genetics National Cerebral and Cardiovascular Center Osaka Japan
36. Division of Clinical Genetics and Genomics Nagoya City University West Medical Center Aichi Japan
37. Department of Obstetrics and Gynecology Toho University Omori Medical Center Tokyo Japan
38. Department of Obstetrics and Gynecology Tokai University School of Medicine Kanagawa Japan
39. Maternal and Child Health Center Aiiku Clinic Tokyo Japan
40. Department of Obstetrics and Gynecology Hiroshima Red Cross Hospital and Atomic‐Bomb Survivors Hospital Hiroshima Japan
41. Department of Obstetrics and Gynecology Asahikawa Medical University Hokkaido Japan
42. Departments of Obstetrics and Gynecology Hyogo Prefectural Amagasaki General Medical Center Hyogo Japan
43. Departments of Obstetrics and Gynecology, Kokura Medical Center National Hospital Organization Fukuoka Japan
44. Department of Obstetrics and Gynaecology Showa University Northern Yokohama Hospital Kanagawa Japan
45. Department of Obstetrics and Gynaecology Yamaguchi Prefectural Grand Medical Center Yamagichi Japan
46. Reproduction Center Dokkyo Medical University Saitama Medical Center Saitama Japan
47. Departments of Obstetrics and Gynecology University of Tokyo Tokyo Japan
48. Departments of Obstetrics and Gynecology Gifu University Gifu Japan
49. Departments of Obstetrics and Gynecology Kansai Rosai Hospital Hyogo Japan
50. Department of Pediatrics Shimane University Shimane Japan
51. Departments of Obstetrics and Gynecology Japanese Red Cross Kyoto Daiichi Hospital Kyoto Japan
52. Departments of Obstetrics and Gynecology Adachi Hospital Kyoto Japan
53. Department of Obstetrics and Gynaecology Fukushima Medical University Fukushima Japan
54. Division of Clinical Genetics Tottori University Hospital Tottori Japan
55. Division of Human Genetics, Center for Molecular Medicine Jichi Medical University Tochigi Japan
56. Department of Obstetrics and Gynaecology Shiga University of Medical Science Shiga Japan
57. Department of Obstetrics and Gynaecology Kochi University Kochi Japan
58. Department of Obstetrics and Gynaecology International University of Health and Welfare Hospital Tochigi Japan
59. Department of Obstetrics and Gynecology, Faculty of Medicine University of Tsukuba Ibaraki Japan
60. Department of Nutrition and Metabolism in Cardiovascular Disease, Graduate School of Medical and Dental Sciences Tokyo Medical and Dental University Tokyo Japan
61. Department of Obstetrics and Gynecology Kansai Medical University Osaka Japan
62. Department of Obstetrics and Gynecology Kobe Adventist Hospital Hyogo Japan
63. Department of Obstetrics and Gynecology AOI Nagoya Hospital Aichi Japan
64. Department of Obstetrics and Gynecology Tokyo Medical University Tokyo Japan
65. Department of Obstetrics and Gynaecology University of Toyama Toyama Japan
66. Department of Medical Genetics Sakakibara Heart Institute Tokyo Japan
67. Department of Obstetrics and Gynecology Kyorin University School of Medicine Tokyo Japan
68. Department of Obstetrics Aichi Children's Health and Medical Center Aichi Japan
69. Department of Obstetrics and Gynecology Kitasato University Medical Center Saitama Japan
70. Department of Obstetrics and Gynecology Mitsubishi Kyoto Hospital Kyoto Japan
71. Department of Pediatrics Ibaraki Prefectural Central Hospital Ibaraki Japan
72. Department of Obstetrics and Gynecology Mito Saiseikai General Hospital Ibaraki Japan
73. Department of Obstetrics and Gynecology Kanazawa Medical University Ishikawa Japan
74. Department of Obstetrics and Gynecology Juntendo University Shizuoka Hospital Shizuoka Japan
75. Center for Maternal–Fetal, Neonatal and Reproductive Medicine National Center for Child Health and Development Tokyo Japan