○Kentaro Akazawa1, Nagato Kuriyama2,3, Etsuko Ozaki3, Daisuke Matsui3, Teruhide Koyama3, Koji Sakai1, Akihiro Takada4, Yoshinori Marunaka4, Toshiki Mizuno5, Ritei Uehara3, Kei Yamada1
(1.Department of Radiology, Kyoto Prefectural University of Medicine, 2.Shizuoka Graduate University of Public Health, 3.Departments of Epidemiology for Community Health and Medicine, Kyoto Prefectural University of Medicine, 4.Kyoto Industrial Health Association, 5.Departments of Neurology, Kyoto Prefectural University of Medicine)
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