1. Hoshizaki Green Foundation:(Present office)Toyama Institute of Health
2. Shimane Prefectural Institute of Public Health and Environmental Science
3. Shimane Prefecture Mountainous Region Research Center
4. National Institute of Infectious Disease
5. Division of Virology, Kanagawa Prefectural Public Health Laboratory
6. Ohara Research Laboratory, Ohara General Hospital
7. Faculty of Medical Sciences, University of Fukui