1. Japan Forum of Fetal Skeletal Dysplasia, Tokyo, Japan
2. Department of Radiology, Boston Children’s Hospital, Boston, MA, USA
3. Department of Radiology, National Center for Child Health and Development, Tokyo, Japan
4. Department of Radiology, Keio University School of Medicine, Tokyo, Japan
5. Department of Maternal and Fetal Medicine, Tohoku University Graduate School of Medicine, Miyagi Children's Hospital, Miyagi, Japan
6. Department of Clinical Genetics, Hyogo Medical University Hospital, Hyogo, Japan
7. Department of Medical Ethics and Medical Genetics, Kyoto University School of Public Health, Kyoto, Japan
8. Department of Obstetrics & Gynecology, National Hospital Organization Saga National Hospital, Saga, Japan
9. Department of Fetal-Maternal Medicine and Obstetrics, Gifu Prefectural General Medical Center, Gifu, Japan
10. Division of Fetal Medicine, National Center for Child Health and Development, Tokyo, Japan
11. Fetal Diagnostic Center, CRIFM Prenatal Medical Clinic, Osaka, Japan
12. Department of Obstetrics and Gynecology, Yamaguchi Prefectural Grand Medical Center, Yamaguchi, Japan