1. Centro de Investigação em Saúde Pública, Escola Nacional de Saúde Pública, Universidade NOVA de Lisboa
2. Public Health Unit, Local Health Unit of Matosinhos, Matosinhos, Portugal
3. Tobacco Free Research Institute, Dublin, Ireland
4. Institute of Medical Sociology, Faculty of Medicine, Martin Luther University Halle-Wittenberg, Halle, Germany
5. Tampere University, Faculty of Social Sciences, Unit of Health Sciences, Tampere, Finland
6. Institute of Health and Society, Université Catholique de Louvain, Brussels, Belgium
7. Department of Public Health, Amsterdam UMC, University of Amsterdam, The Netherlands
8. Department of Adolescent Psychiatry, Tampere University Hospital, Tampere, Finland