1. 1) Government of Japan (2006) Industrial Safety and Health Law (Law No. 25; originally enacted in 1972 as Law No. 57) (in Japanese).
2. 2) Government of Japan (2006) Enforcement Order of Industrial Safety and Health Law, Japan (Cabinet Order No. 72, originally enacted in 1972 as Cabinet Order No. 318) (in Japanese).
3. 3) Inadera H, Tsukahara T (2010) Symposium on industrial and occupational health at universities. Sangyo Eiseigaku Zasshi 52 (Suppl) 237-42 (in Japanese).
4. 4) Ohkubo Y, Karima R, Nakata A, Tsukahara T (2006) Establishment of inter-university net-work for occupational health activities. J Occup Health 29, 65-70 (in Japanese).
5. 5) Ministry of Health, Labour and Welfare, Japan (2006) Ordinance for Prevention of Organic Solvent Poisoning. Ministry of Health, Labour and Welfare Ordinance No. 1; originally enacted in 1972 as Ministry of Labour Ordinance No. 36 (in Japanese).