[1] An Hsin QingShui Clin, Taichung, Taiwan
[2] Sheng An Clin, Yunlin, Taiwan
[3] Fu Ping Hosp, Dialysis Ctr, Taichung, Taiwan
[4] Yuan Lin Hos Hosp, Dialysis Ctr, Changhua, Taiwan
[5] Tungs Taichung MetroHarbor Hosp, Dept Nephrol, 699,Sec 1,Chungchi Rd, Taichung 43503, Taiwan
[6] Tseng Han Chi Hosp, Dialysis Ctr, Nantou, Taiwan
[7] An Hsin Chushan Clin, Nantou, Taiwan
[8] Min Sheng Gen Hosp, Dept Nephrol, Taoyuan, Taiwan
[9] St Pauls Hosp, Dept Nephrol, Taoyuan, Taiwan
[10] Hsin Jen Hosp, Dialysis Ctr, Taipei, Taiwan
[11] China Med Univ, Sch Med, Taichung, Taiwan