[1] Natl Cardiovasc Ctr, Dept Med, Div Nephrol & Hypertens, Suita, Osaka 5658565, Japan
[2] Univ Tokyo, Fac Med, Dept Internal Med, Tokyo, Japan
[3] Saiseikai Kure Hosp, Dept Internal Med, Kure, Japan
[4] Kyushu Natl Med Ctr, Div Hypertens, Fukuoka, Japan
[5] Shiga Univ Med Sci, Dept Hlth Sci, Otsu, Shiga, Japan