T Kenzaka1, T Ueshimo2. 1. Division of Community Medicine and Career Development, Kobe University Graduate School of Medicine, Kobe, Japan and Department of Internal Medicine, Hyogo Prefectural Kaibara Hospital, Tamba, Japan. 2. Department of Clinical Laboratories and Radiology, Hyogo Prefectural Kaibara Hospital, Tamba, Japan. email: smile.kenzaka@jichi.ac.jp.