1. Department of Epidemiology and Prevention; National Center for Global Health and Medicine; Tokyo Japan
2. Hitachi, Ltd.; Ibaraki Japan
3. Mitsui Chemicals, Inc.; Tokyo Japan
4. Seijinkai Shizunai Hospital; Hokkaido Japan
5. Yamaha Corporation; Shizuoka Japan
6. Nippon Steel & Sumitomo Metal Corporation Kimitsu Works; Chiba Japan
7. Furukawa Electric Co., Ltd.; Tokyo Japan
8. Mizue Medical Clinic; Keihin Occupational Health Center; Kanagawa Japan
9. Mitsubishi Plastics, Inc.; Tokyo Japan
10. All Japan Labor Welfare Foundation; Tokyo Japan
11. Azbil Corporation; Tokyo Japan
12. Mitsubishi Fuso Truck and Bus Corporation; Kanagawa Japan
13. Department of Global Public Health; University of Tsukuba; Ibaraki Japan
14. Department of Food and Health Sciences; Fukuoka Women's University; Fukuoka Japan
15. Teikyo University Graduate School of Public Health; Tokyo Japan
16. National Institute of Public Health; Saitama Japan