Affiliation: | 1. Department of Obstetrics and Gynecology, Cathay General Hospital, Taipei, Taiwan;2. Department of Obstetrics and Gynecology, Far Eastern Memorial Hospital, Taiwan;3. Department of Obstetrics and Gynecology, Cathay General Hospital Shinchu branch, Shinchu, Taiwan;4. School of Medicine, Fu Jen Catholic University, Taiwan;5. College of Medicine, Taipei Medical University, Taiwan |