[1] Agencia Salut Publ Barcelona, Barcelona 08023, Spain
[2] CIBER Epidemiol & Salud Publ CIBERESP, Madrid 28029, Spain
[3] Univ Pompeu Fabra, Ctr Res Occupat Hlth, Barcelona 08002, Spain
[4] Inst Biomed Res IIB St Pau, Barcelona 08041, Spain
[5] Univ Autonoma Barcelona, Fac Med, Dept Pediat Obstet & Ginecol & Med Prevent, Barcelona 08193, Spain
[6] Univ Valencia, Nursing Dept, Ctr Publ Hlth Res, Hlth Inequal Area, Valencia 46010, Spain
[7] Reg Minist Hlth, Valencian Sch Hlth Studies, Generalitat Valenciana, Valencia 46010, Spain