[1] Univ Amsterdam, Acad Med Ctr, Dept Social Med, NL-1012 WX Amsterdam, Netherlands
[2] Univ Amsterdam, Acad Med Ctr, Dept Clin Epidemiol & Biostat, NL-1012 WX Amsterdam, Netherlands
[3] Univ Amsterdam, Acad Med Ctr, Dept Clin Informat, NL-1012 WX Amsterdam, Netherlands
[4] Natl Inst Publ Hlth & Environm, Dept Hlth Serv Res, NL-3720 BA Bilthoven, Netherlands