1. 1. Jp NA, Imanaka M & Suganuma N (2017): Japanese workplace health management in pneumoconiosis prevention. J Occup Health 59(2): 91−103
2. 2. Ministry of Health, Labour and Welfare, Japan. Results of survey on occupational injury compensation for work-related illnesses (nationwide). https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/koyou_roudou/roudoukijun/gyoumu_00531.html (accessed June 20, 2021) (in Japanese)
3. 3. Ministry of Health, Labour and Welfare, Japan. Survey on occurrence of work-related illnesses. 2019. https://www.mhlw.go.jp/stf/newpage_12883.html (accessed June 20, 2021) (in Japanese)
4. 4. Ministry of Labour, Japan. Ordinance on prevention of hazards due to dust. https://www.mhlw.go.jp/web/t_doc?dataId=74107000&dataType=0&pageNo=1 (accessed August 1, 2021) (in Japanese)
5. 5. Ministry of Health, Labour and Welfare, Japan. Ordinance on prevention of health impairment due to asbestos. https://www.mhlw.go.jp/web/t_doc?dataId=74aa6787&dataType=0&pageNo=1 (accessed June 20, 2021) (in Japanese)