About Kusaka, Y.
About Department of Hygiene, Medical School, Osaka University, Osaka City 530
About Ichikawa, Y.
About Department of Hygiene, Medical School, Osaka University, Osaka City 530
About Shirakawa, T.
About Department of Hygiene, Medical School, Osaka University, Osaka City 530
About Goto, S.
About Department of Hygiene, Medical School, Osaka University, Osaka City 530
About British Journal of Industrial Medicine