[1] Imperial Coll London, Sch Publ Hlth, Publ Hlth Policy Evaluat Unit, London, England
[2] Imperial Coll London, Sch Publ Hlth, Dept Primary Care & Publ Hlth, London, England
[3] ICO, WHO Collaborating Ctr Tobacco Control, Tobacco Control Unit, Barcelona, Catalonia, Spain
[4] Inst Invest Biomed Bellvitge IDIBELL, Canc Prevent & Control Grp, Barcelona, Spain
[5] Univ Barcelona, Sch Med, Dept Clin Sci, Campus Bellvitge, Barcelona, Spain
[6] European Network Smoking & Tobacco Prevent, Brussels, Belgium