1. Tobacco Control Unit, WHO Collaborating Centre for Tobacco Control, Institut Català d’Oncologia-ICO , L’Hospitalet de Llobregat, Barcelona , Spain
2. School of Medicine and Health Sciences, Campus de Bellvitge, Universitat de Barcelona , L’Hospitalet de Llobregat, Barcelona , Spain
3. Tobacco Control Research Group, Institut d’Investigació Biomèdica de Bellvitge-IDIBELL , L’Hospitalet de Llobregat, Barcelona , Spain
4. Center for Biomedical Research in Respirarory Diseases (CIBER en Enfermedades Respiratorias, CIBERES) , Madrid , Spain
5. Policy Studies Institute, Philip R. Lee Institute for Health Policy Studies, University of California San Francisco , San Francisco, CA 94118 , USA
6. Department of Public Health, Mental Health and Maternity Health, School of Nursing, University of Barcelona, Campus Bellvitge (Hospitalet de Llobregat) , Spain
7. E-oncologia, Institut Català d’Oncologia-ICO , L’Hospitalet de Llobregat, Barcelona , Spain
8. Occupational Health Department, Consorci Sanitari Integral , L’Hospitalet de Llobregat, Barcelona , Spain
9. Division of Prevention and Rehabilitation, University of Ottawa Heart Institute , Ottawa , Canada
10. Social and Family Medicine, School of Medicine, University of Crete , Greece
11. National Centre for Smoking Cessation and Training , London , UK