1. Bureau of International Health Cooperation, National Center for Global Health and Medicine, Tokyo, Japan.
2. International Health Care Center, National Center for Global Health and Medicine, Tokyo, Japan.
3. Department of Radiological Physics and Technology, National Center for Global Health and Medicine, Tokyo, Japan.
4. Department of Pediatrics, National Center for Global Health and Medicine, Tokyo, Japan.
5. Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan.
6. Department of Clinical Trial Management, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan.
7. Department of Radiology, National Center for Global Health and Medicine, Tokyo, Japan.