1 Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan; Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan; School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan; Institute of Clinical and Community Health Nursing, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Obstetrics and Gynecology, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan; Department of Medical Laboratory Science and Biotechnology, College of Medical & Health Science, Asia University, Taichung, Taiwan. Electronic address: cpc_mmh@yahoo.com.
2 Department of Obstetrics and Gynecology, Mackay Memorial Hospital, Taipei, Taiwan.
3 Department of Obstetrics and Gynecology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
4 Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan.