Affiliation: | 1. Department of Obstetrics and Gynecology, Cathay General Hospital, Taipei, Taiwan;2. Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan;3. Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan;4. Department of Obstetrics and Gynecology, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan |