1. Graduate Institute of Medical Sciences; National Defense Medical Center; Taipei Taiwan
2. Department of Obstetrics and Gynecology; Tri-Service General Hospital, National Defense Medical Center; Taipei Taiwan
3. Department of Obstetrics and Gynecology; Taipei Medical University-Shuang Ho Hospital; New Taipei City Taiwan
4. School of Oral Hygiene; College of Oral Medicine; Taipei Medical University; Taipei Taiwan
5. Graduate Institute of Life Sciences; National Defense Medical Center; Taipei Taiwan
6. Department of Microbiology and Immunology; National Defense Medical Center; Taipei Taiwan
7. Department of Obstetrics and Gynecology; Tzu Chi General Hospital; Tzu Chi University; Hualien Taiwan
8. Department and Graduate Institute of Biochemistry; National Defense Medical Center; Taipei Taiwan
9. Department of Obstetrics and Gynecology; School of Medicine, Taipei Medical University; Taipei Taiwan