[1] Agencia Salut Publ Barcelona, Barcelona 08023, Spain
[2] Pompeu Fabra Univ, Res Grp Hlth Inequal, Barcelona, Spain
[3] Univ Oberta Catalunya, Catalunya, Spain
[4] Agcy Publ Hlth Barcelona, Publ Hlth Observ, Hlth Informat Serv, Barcelona, Spain
[5] Karolinska Inst, Dept Publ Hlth Sci, Stockholm, Sweden
[6] CAMH, Social Policy & Prevent Res Dept, Toronto, ON, Canada
[7] Univ Toronto, Fac Nursing, Toronto, ON M5S 1A1, Canada
[8] Univ Toronto, Fac Med, Dept Publ Hlth Sci, Toronto, ON M5S 1A1, Canada
[9] Univ Toronto, Fac Med, Dept Psychiat, Toronto, ON M5S 1A1, Canada
[10] Publ Hlth Agcy Barcelona, Community Hlth Serv, Barcelona, Spain
[11] Reg Epidemiol Unit Piemonte, Piemonte, Italy
[12] Erasmus MC, Dept Publ Hlth, Rotterdam, Netherlands
[13] Univ Complutense Madrid, E-28040 Madrid, Spain
[14] Univ Turin, Turin, Italy
[15] Univ Coimbra, P-3000 Coimbra, Portugal
[16] Vrije Univ Brussel, Brussels, Belgium
[17] Johns Hopkins Univ, Baltimore, MD USA