1 Department of Obstetrics and Gynecology, National Yang-Ming University School of Medicine, Taipei, Taiwan; Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Medical Research, China Medical University Hospital, Taichung, Taiwan. Electronic address: phwang@vghtpe.gov.tw.
2 Department of Obstetrics and Gynecology, National Yang-Ming University School of Medicine, Taipei, Taiwan; Department of Obstetrics and Gynecology, Taipei Veterans General Hospital, Taipei, Taiwan.
3 Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan.
4 Department of Obstetrics and Gynecology, Taipei Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan.
5 Department of Obstetrics and Gynecology, Kaohsiung Veterans General Hospital, Kaohsiung, National Yang-Ming University, Taipei, Taiwan; Department of Pharmacy and Graduate Institute of Pharmaceutical Technology, Tajen University, Pingtung County, Taiwan.
6 Department of Obstetrics and Gynecology, Taichung Veterans General Hospital, Taichung, Taiwan; National Yang-Ming University, Taipei, Taiwan.
7 Department of Obstetrics and Gynecology, National Yang-Ming University Hospital, Yilan, Taiwan; National Yang-Ming University, Taipei, Taiwan.
8 Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University, Taipei, Taiwan.
9 Department of Obstetrics and Gynecology, Tri-Service General Hospital and National Defense Medical Center, Taipei, Taiwan.
10 Department of Obstetrics and Gynecology, Far Eastern Memorial Hospital, New Taipei City, Taiwan.
11 Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan.
12 Department of Obstetrics and Gynecology, Taipei Buddhist Tzu Chi General Hospital, Taipei, Taiwan.
13 Department of Obstetrics and Gynecology, Cathay General Hospital, Taipei, Taiwan.
14 Department of Obstetrics and Gynecology, Taipei Medical University Hospital and Taipei Medical University, Taipei, Taiwan.
15 Department of Obstetrics and Gynecology, Chang Gung Memorial Hospital and Chang Gung University, Taoyuan, Taiwan.