Tsunenori Saito1, Hironori Katayama2, Eitaro Kodani1. 1. Department of Internal Medicine and Cardiology, Nippon Medical School Tama-Nagayama Hospital, 1-7-1 Nagayama, Tama-shi, Tokyo, Japan. 2. Department of Pathology, Nippon Medical School Tama-Nagayama Hospital, 1-7-1 Nagayama, Tama-shi, Tokyo, Japan.