[1] Jichi Med Univ, Sch Med, Dept Med, Div Cardiovasc Med, Shimotsuke, Tochigi, Japan
[2] Haimoto Clin, Kasugai, Aichi, Japan
[3] Yamagiwa Clin, Kasugai, Aichi, Japan
[4] Oooka Clin, Nagano, Japan
[5] Jichi Med Univ, Sch Med, Dept Med, Div Endocrinol & Metab, Shimotsuke, Tochigi, Japan
[6] Ishikai Hosp, Iwakuni City Med Cntr, Yamaguchi, Japan
[7] Kyusyu Univ Hosp, Dept Gen Internal Med, Fukuoka, Japan
[8] Jichi Med Univ, Sch Med, Div Community & Family Med, Shimotsuke, Tochigi, Japan