1. Department of Epidemiology and Prevention, National Center for Global Health and Medicine
2. Hitachi, Ltd.
3. Mitsui Chemicals, Inc.
4. Teikyo University Graduate School of Public Health
5. Department of Global Public Health, University of Tsukuba
6. Tokyo Gas Co., Ltd.
7. Azbil Corporation
8. Nippon Steel & Sumitomo Metal Corporation Kimitsu Works
9. Mitsubishi Fuso Truck and Bus Corporation
10. Seijinkai Shizunai Hospital
11. YAMAHA CORPORATION
12. Mizue Medical Clinic, Keihin Occupational Health Center
13. Furukawa Electric Co., Ltd.
14. All Japan Labour Welfare Foundation
15. Mitsubishi Plastics, Inc.
16. National Institute of Public Health