1. Department of Obstetrics and Gynecology, Changhua Christian Hospital, Changhua, Taiwan
2. Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
3. Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
4. Department of Biomedical Sciences, Chung Shan Medical University, Taichung, Taiwan
5. School of Medicine, Chung Shan Medical University, Taichung, Taiwan
6. Department of Pathology, Chung Shan Medical University and Chung Shan Medical University Hospital, Taichung, Taiwan
7. Department of Obstetrics and Gynecology, Chung Shan Medical University Hospital, Taichung, Taiwan