1. Department of Obstetrics and Gynecology, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
2. Department of Obstetrics and Gynecology, University of Hong Kong, Hong Kong.
3. Department of Obstetrics and Gynecology, National Taiwan University Hospital, Taipei, Taiwan.
4. Department of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
5. Department of Obstetrics and Gynecology, The Jikei University, Tokyo, Japan.
6. Department of Laboratory Medicine, Changi General Hospital, Singapore.
7. Department of Pathology, Hospital Sultanah Aminah, Johor Bahru, Johor, Malaysia.
8. Abbott Diagnostics, Abbott Park, IL, USA.
9. Department of Obstetrics and Gynecology, MCU-FDT Medical Foundation, Caloocan, Philippines.