About the Authors

Esteve Fernández

efernandez@ico.scs.es

Affiliations Tobacco Research & Control Unit, Institut Català d'Oncologia (ICO), L'Hospitalet de Llobregat, Barcelona, Spain, Department of Clinical Sciences, Campus of Bellvitge, Universitat de Barcelona, L'Hospitalet, Barcelona, Spain, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain

Marcela Fu

Affiliations Tobacco Research & Control Unit, Institut Català d'Oncologia (ICO), L'Hospitalet de Llobregat, Barcelona, Spain, Department of Clinical Sciences, Campus of Bellvitge, Universitat de Barcelona, L'Hospitalet, Barcelona, Spain, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain

José A. Pascual

Affiliations Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain, Bioanalysis Research Group, Neuropsychopharmacology Programme, IMIM-Hospital del Mar, Barcelona, Spain

María J. López

Affiliations Evaluation and Intervention Methods Unit, Agència de Salut Pública de Barcelona (ASPB), Barcelona, Spain, CIBER de Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain, Programme in Public Health and Biomedical Research, Universitat Autònoma de Barcelona, Bellaterra, Spain

Mónica Pérez-Ríos

Affiliations CIBER de Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain, Consejería de Salud, Xunta de Galicia, Santiago de Compostela, Spain, Department of Public Health, Universidade de Santiago de Compostela, Santiago de Compostela, Spain

Anna Schiaffino

Affiliations Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain, Ajuntament de Terrassa-IMSABS, Terrassa, Spain

Jose M. Martínez-Sánchez

Affiliations Tobacco Research & Control Unit, Institut Català d'Oncologia (ICO), L'Hospitalet de Llobregat, Barcelona, Spain, Department of Clinical Sciences, Campus of Bellvitge, Universitat de Barcelona, L'Hospitalet, Barcelona, Spain, Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain

Carles Ariza

Affiliations Evaluation and Intervention Methods Unit, Agència de Salut Pública de Barcelona (ASPB), Barcelona, Spain, CIBER de Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain

Esteve Saltó

Affiliations Department of Public Health, Universitat de Barcelona, Barcelona, Spain, Department of Health, Generalitat de Catalunya, Barcelona, Spain

Manel Nebot

Affiliations Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain, Evaluation and Intervention Methods Unit, Agència de Salut Pública de Barcelona (ASPB), Barcelona, Spain, CIBER de Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain

and the Spanish Smoking Law Evaluation Group

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: EF MJL MPR AS CA ES MN. Performed the experiments: JAP. Analyzed the data: EF MF JAP AS JMMS. Contributed reagents/materials/analysis tools: MF JAP MJL ES. Wrote the paper: EF MF JAP MJL MPR AS JMMS CA ES MN. Co-ordinated participant recruitment, data collection and data management: EF MF. Wrote the first version of the paper: EF. Guarantoor: EF. Assisted with participant recruitment and data collection, in collaboration with study co-ordinators and field workers in each region: MF MJL MPR AS. Participated in the interpretation of results: MF JAP MJL MPR AS JMMS CA ES MN. Contributed to the writing of the manuscript: MF JAP ES MN. Participated in the study design: JAP MJL MPR AS. Responsible for cotinine analyses, in collaboration with Raúl Pérez: JAP. Contributed to the critical review of the manuscript: JAP MPR AS JMMS CA. Contributed to revision of the manuscript: JAP MPR AS JMMS CA ES MN. Performed statistical analyses: JMMS.