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Koichi Takeda
Division of General Medicine, Center for Community Medicine, Jichi Medical University School of Medicine, Japan
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Tsuneaki Kenzaka
Division of General Medicine, Center for Community Medicine, Jichi Medical University School of Medicine, Japan
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Shigehiro Kuroki
Division of General Medicine, Center for Community Medicine, Jichi Medical University School of Medicine, Japan
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Eiji Kajii
Division of Community and Family Medicine, Center for Community Medicine, Jichi Medical University School of Medicine, Japan