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Hideki OHNO
Department of Hygiene and Preventive Medicine, Asahikawa Medical College
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Kazuyuki TARAYAMA
Department of Hygiene and Preventive Medicine, Asahikawa Medical College
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Fumiko HIRATA
Department of Hygiene and Preventive Medicine, Asahikawa Medical College
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Tadao KAWARABAYASHI
Department of Hygiene and Preventive Medicine, Asahikawa Medical College
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Hitoshi OCHI
Department of Hygiene and Preventive Medicine, Hokkaido University School of Medicine
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Naoyuki TANIGUCHI
Department of Hygiene and Preventive Medicine, Hokkaido University School of Medicine
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Eimatsu TAKAKUWA
Department of Hygiene and Preventive Medicine, Hokkaido University School of Medicine
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Mitsugu YAMAGUCHI
Center of Occupational Medicine, Iwamizawa Labor Accident Hospital
