Affiliation: | 1. Former Professor of Faculty of Economics, Toyo University, Tokyo, Japan;2. National Institute of Occupational Safety and Health, Kawasaki, Japan;3. Department of Respiratory Medicine and Asbestos‐related Disease Research Center, Okayama Rosai Hospital, Okayama, Japan;4. Department of the Relief for Asbestos Related Diseases, Environmental Restoration and Conservation Agency, Kawasaki, Japan |