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1 Division of General Internal Medicine, Jichi Medical University Hospital, Shimotsuke and Division of Postgraduate Clinical Training Center, Wakayama Medical University School of Medicine, Wakayama, Japan and.
2 Division of General Internal Medicine, Jichi Medical University Hospital, Shimotsuke, and Division of Community Medicine and Career Development, Kobe University Graduate School of Medicine, Kobe, Japan. e-mail: smile.kenzaka@jichi.ac.jp.
1 Division of General Internal Medicine, Jichi Medical University Hospital, Shimotsuke and Division of Postgraduate Clinical Training Center, Wakayama Medical University School of Medicine, Wakayama, Japan and.
2 Division of General Internal Medicine, Jichi Medical University Hospital, Shimotsuke, and Division of Community Medicine and Career Development, Kobe University Graduate School of Medicine, Kobe, Japan. e-mail: smile.kenzaka@jichi.ac.jp.