1. Bureau of International Health Cooperation, National Center for Global Health and Medicine, Tokyo, Japan.
2. Graduate School of Health Sciences, University of the Ryukyus, Okinawa, Japan.
3. Nan hospital, Nan, Thailand.
4. Nae Fah Luang Hospital, Chiang Rai, Thailand.
5. Graduate School of Public Health, Teikyo University, Tokyo, Japan.