[1] Univ Montreal, Dept Hlth Adm, Ctr Ville Branch, Montreal, PQ H3C 3J7, Canada
[2] Quebec Hlth Serv & Technol Assessment Agcy, Montreal, PQ H3A 2S9, Canada
[3] Univ Barcelona, Fac Med, Dept Med, E-08036 Barcelona, Spain
[4] Catalan Agcy Hlth Technol Assessment & Res, Barcelona 08023, Spain
[5] Univ Barcelona, Dept Sociol & Organizat Anal, Barcelona 08021, Spain
[6] Univ Montreal, Grp Interdisciplinaire Sante, Montreal, PQ M3C 3J7, Canada
[7] Univ Ottawa, Ottawa Hosp, Clin Epidemiol Unit, Ottawa, ON K1Y 4E9, Canada
[8] Univ Cattolica Sacro Cuore, Agostino Gemelli Polyclin, Hlth Technol Unit, I-00168 Rome, Italy
[9] Publ Hlth Agcy Lazio Reg ASP, I-00198 Rome, Italy
[10] Univ Cattolica Sacro Cuore, Dept Hyg & Publ Hlth, I-00168 Rome, Italy