[1] Nagoya Univ Hosp, Dept Endoscopy, Nagoya, Aichi 4668560, Japan
[2] Matsuo Med Clin, Osaka, Japan
[3] Tohoku Univ Hosp, Div Nephrol Endocrinol & Vasc Med, Sendai, Miyagi 9800872, Japan
[4] Tohoku Univ Hosp, Div Nephrol Endocrinol & Vasc Med, Sendai, Miyagi 9800872, Japan
[5] Natl Cerebral & Cardiovasc Ctr, Div Nephrol & Hypertens, Osaka, Japan
[6] Kyushu Univ, Grad Sch Med Sci, Dept Med & Biosyst Sci, Fukuoka 812, Japan
[7] Kansai Elect Power Hosp, Clin Cent Lab, Osaka, Japan
[8] Tohoku Univ, Grad Sch Med, Dept Diagnost Radiol, Sendai, Miyagi 980, Japan
[9] Nara Med Univ, Dept Endoscopy & Ultrasound, Nara, Japan
[10] Saitama Med Univ, Int Med Ctr, Dept Cardiol, Saitama, Japan
[11] Tohoku Univ Hosp, Clin Physiol Ctr, Sendai, Miyagi 9800872, Japan