1. Bureau of International Health Cooperation, National Center for Global Health and Medicine, Tokyo 162-8655, Japan
2. Department of Global Health Research, Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
3. Department of Global Health Policy, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8654, Japan
4. Institute for Community Health Research, University of Medicine and Pharmacy, Hue University, Hue 530000, Vietnam