1. Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei, Taiwan
2. Graduate Institute of Clinical Medicine, College of Medicine, National Taiwan University, Taipei, Taiwan
3. Graduate Institute of Oncology, College of Medicine, National Taiwan University, Taipei, Taiwan
4. Department of Public Health, Graduate Institute of Epidemiology and Preventive Medicine, National Taiwan University, Taipei, Taiwan
5. Department of Pathology, National Taiwan University Hospital, Taipei, Taiwan