1. Division of Reproductive Medicine; National Center for Child Health and Development
2. Community Health Science Center; Saitama Medical University
3. Alba Okinawa Clinic; Okinawa
4. Department of Obstetrics and Gynecology; School of Medicine, University of Tokushima; Tokushima Japan
5. Department of Obstetrics and Gynecology; Saitama Medical University; Saitama
6. Comprehensive Reproductive Medicine, Regulation of Internal Environment and Reproduction, Systemic Organ Regulation; Graduate School; Tokyo Medical and Dental University
7. Department of Obstetrics and Gynecology; Keio University School of Medicine; Tokyo