1. Department of Obstetrics and Gynecology, Taipei Medical University Hospital, Taipei, Taiwan
2. Department of Obstetrics and Gynecology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
3. National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
4. Graduate Institute of Integration of Traditional Chinese Medicine with Western Nursing, National Taipei University of Nursing and Health Sciences, No. 365 Ming-De Road, Beitou, Taipei 11211, Taiwan