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*Kazuyuki Iwakiri
National Institute of Occupational Safety and Health
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Masaya Takahashi
National Institute of Occupational Safety and Health
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Midori Sotoyama
National Institute of Occupational Safety and Health
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Mamoru Hirata
Shiga University of Medical Science
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Teruyo Kitahara
Shiga University of Medical Science
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Kazushi Taoda
Shiga University of Medical Science