Affiliation: | 1. Department of Obstetrics and Gynecology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan;2. Department of Obstetrics & Gynecology, Shin Kong Memorial Wu Ho-Su Hospital, Taipei, Taiwan;3. Infection Control Center, National Taiwan University Hospital, Taipei, Taiwan;4. Dianthus MFM Clinic, Taipei, Taiwan |