[1] Univ Zagreb, Sch Med, Salata 3, Zagreb 10000, Croatia
[2] Clin Hosp Ctr Zagreb, Dept Internal Med, Div Clin Pharmacol, Kispaticeva 12, Zagreb 10000, Croatia
[3] Netherlands Inst Hlth Serv Res NIVEL, Otterstraat 118, NL-3553 Utrecht, Netherlands
[4] Radboud Univ Nijmegen, Dept Sociol, Thomas Van Aquinostr 4, NL-6524 Nijmegen, Netherlands