1. Department of Epidemiology and Prevention, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan.
2. Department of Rehabilitation Sciences, Kitasato University Graduate School of Medical Sciences, Kanagawa, Japan.
3. Department of Laboratory Testing, Center Hospital of the National Center for Global Health and Medicine, Tokyo, Japan.
4. Department of Refractory Viral Infection, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan.
5. Center of Medical Informatics Intelligence, National Center for Global Health and Medicine, Tokyo, Japan.
6. Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan.
7. Research Institute, National Center for Global Health and Medicine, Tokyo, Japan.
8. Center Hospital of the National Center for Global Health and Medicine, Tokyo, Japan.
9. Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan.