[1] Erasmus MC, Dept Internal Med, Rotterdam, Netherlands
[2] Univ Amsterdam, Acad Med Ctr, Hans Mak Inst, Dept Clin Epidemiol & Biostat, Naarden, Netherlands
[3] Leiden Univ, Med Ctr, Dept Clin Epidemiol, Leiden, Netherlands
[4] Univ Amsterdam, Acad Med Ctr, Dept Nephrol, NL-1105 AZ Amsterdam, Netherlands