1. Department of Healthcare Administration Nagoya University Graduate School of Medicine Nagoya Japan
2. Department of Obstetrics and Gynecology Nagoya University Graduate School of Medicine Nagoya Japan
3. Cambodian Society of Gynecology and Obstetrics Phnom Penh Cambodia
4. Bureau of International Health Cooperation, National Center for Global Health and Medicine Tokyo Japan
5. Communicable Disease Control Department, Ministry of Health Phnom Penh Cambodia