[1] Sichuan Univ, West China Hosp, Dept Nephrol, Hemodialysis Ctr, 37 Guoxue Rd, Chengdu 610041, Sichuan, Peoples R China
[2] Univ Tokyo, Grad Sch Med, Dept Community Hlth Nursing, Tokyo, Japan
[3] Univ Tokyo, Grad Sch Med, Global Nursing Res Ctr, Tokyo, Japan