1 Department of Obstetrics and Gynecology, Chung-Shing Branch, Taipei City Hospital, Taipei, Taiwan.
2 Department of Nursing, MacKay Junior College of Medicine, Nursing and Management, New Taipei City, Taiwan; MacKay Medical College, New Taipei City, Taiwan; Department of Anesthesia, MacKay Memorial Hospital, Taipei, Taiwan.
3 Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan; Department of Nursing, MacKay Junior College of Medicine, Nursing and Management, New Taipei City, Taiwan; MacKay Medical College, New Taipei City, Taiwan. Electronic address: [email protected].
4 Department of Obstetrics and Gynecology, MacKay Memorial Hospital, Taipei, Taiwan; Department of Nursing, MacKay Junior College of Medicine, Nursing and Management, New Taipei City, Taiwan; MacKay Medical College, New Taipei City, Taiwan.