1. Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan.
2. Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan.
3. Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital, Linko, Taiwan.
4. Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
5. Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei, Taiwan.
6. Department of Obstetrics and Gynecology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan.
7. Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, Taichung, Taiwan.
8. Department of Obstetrics and Gynecology, Kaohsiung Medical University Chung-Ho Memorial Hospital, Kaohsiung, Taiwan.
9. Department of Obstetrics and Gynecology, China Medical University Hospital, Taichung, Taiwan.
10. Gynecologic Cancer Center, Department of Obstetrics and Gynecology, Cathay General Hospital, Taipei, Taiwan.
11. Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Chi-Mei Medical Center, Tainan, Taiwan.
12. Department of Obstetrics and Gynecology, Yuan's General Hospital, Kaohsiung, Taiwan.
13. Department of Obstetrics and Gynecology, Far Eastern Memorial Hospital, Banqiao, New Taipei, Taiwan.
14. Department of Obstetrics and Gynecology, Taipei Veterans General Hospital and Department of Obstetrics and Gynecology, National Yang-Ming University School of Medicine, Taipei, Taiwan.