[1] Univ Groningen, Univ Med Ctr Groningen, Dept Nephrol, Groningen, Netherlands
[2] Natl Med Sci & Nutr Inst Salvador Zubiran, Dept Nephrol & Mineral Metab, Mexico City, DF, Mexico
[3] Univ Calgary, Dept Med, Calgary, AB, Canada
[4] Duke NUS Grad Med Sch, Programme Hlth Serv & Syst Res, Singapore, Singapore
[5] Univ Groningen, Univ Med Ctr Groningen, Dept Clin Pharmacol, NL-9700 RB Groningen, Netherlands
[6] Munich Gen Hosp, Dept Nephrol, Munich, Germany
[7] Univ Erlangen Nurnberg, Dept Med, Clin 4, Nurnberg, Germany
[8] Johns Hopkins Univ, Dept Epidemiol, Bloomberg Sch Publ Hlth, Baltimore, MD USA
[9] China Med Univ Hosp, Taichung, Taiwan
[10] Natl Hlth Res Inst, Inst Populat Hlth Sci, Zhunan, Taiwan