1. Department of Public Health, Tokushima University Graduate School of Biomedical Sciences
2. Department of Epidemiology and Prevention, National Center for Global Health and Medicine
3. Mitsubishi Heavy Industries, Ltd.
4. Hitachi Health Care Center, Hitachi, Ltd.
5. Mitsui Chemicals, Inc.
6. NIPPON STEEL CORPORATION, EAST NIPPON WORKS Kimitsu Area
7. Mitsubishi Fuso Truck and Bus Corporation
8. East Japan Works (Keihin), JFE Steel Corporation
9. Division of Chemical Information, National Institute of Occupational Safety and Health
10. Department of Global Public Health, Faculty of Medicine, University of Tsukuba
11. Healthplant Co., Ltd.
12. All Japan Labour Welfare Foundation
13. KUBOTA Corporation