1Tobacco Research and Control Unit, Institut Català d'Oncologia-IDIBELL, L'Hospitalet de Llobregat, Barcelona, Spain, 2Department of Clinical Sciences, Campus de Bellvitge, Universitat de Barcelona, L'Hospitalet de Llobregat, Barcelona, Spain, 3Epidemiology Unit, Dirección General de Salud Pública, Xunta de Galicia, Santiago de Compostela, Spain, 4Department of Public Health, Universidade de Santiago de Compostela, Santiago de Compostela, Spain, 5CIBER de Epidemiología y Salud Pública (CIBERESP), Spain, 6Evaluation and Intervention Methods Unit, Agència de Salut Pública de Barcelona (ASPB), Barcelona, Spain and 7Programme in Public Health and Biomedical Research, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
Correspondence to: Esteve Fernández, Tobacco Research and Control Unit, Institut Català d'Oncologia. Av. Gran Via de L'Hospitalet, 199-203, 08907 L'Hospitalet de Llobregat (Barcelona), Spain. E-mail: [email protected]
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