[1] Osaka Univ, Grad Sch Med, Dept Nephrol, Osaka, Japan
[2] Osaka Univ, Grad Sch Med, Dept Urol, Osaka, Japan
[3] Osaka Univ, Grad Sch Med, Dept Interorgan Commun Res Kidney Dis, Osaka, Japan
[4] Osaka Univ, Grad Sch Med, Dept Nephrol, Box D11,2-2 Yamada Oka, Suita, Osaka 5850871, Japan