[1] Osaka Univ, Grad Sch Med, Dept Geriatr Med & Nephrol, Suita, Osaka, Japan
[2] Toyonaka City Hosp, Dept Internal Med, Toyonaka, Osaka, Japan
[3] Osaka Rosai Hosp, Dept Nephrol, Sakai, Osaka, Japan
[4] Osaka Gen Med Ctr, Dept Kidney Dis, Osaka, Japan
[5] Osaka Gen Med Ctr, Dept Hypertens, Osaka, Japan
[6] Osaka Univ, Grad Sch Med, Dept Geriatr Med & Nephrol, Osaka, Japan