1 Department of Obstetrics and Gynecology, Far Eastern Memorial Hospital, New Taipei, Taiwan.
2 Department of Obstetrics and Gynecology, Far Eastern Memorial Hospital, New Taipei, Taiwan; Department of Obstetrics and Gynecology, National Taiwan University Hospita Hsin-Chu Branch, Hsin Chu City, Taiwan. Electronic address: yichen.chuang@gmail.com.
3 Department of Obstetrics and Gynecology, National Taiwan University Hospita Hsin-Chu Branch, Hsin Chu City, Taiwan.