1. Instituto de Medicina Preventiva e Saúde Pública, Faculty of Medicine Lisbon University Lisbon Portugal
2. Agrupamento de Centros de Saúde Dão Lafões Viseu Portugal
3. Department of Psychology Durham University Durham UK
4. Institute of Public Health University of Cambridge Cambridge UK
5. Academic Centre for General Practice KU Leuven Leuven Belgium
6. School of Health and Related Research (ScHARR) University of Sheffield Sheffield UK
7. Institute for Social Marketing & Health (ISMH), Faculty of Health Sciences & Sport University of Stirling Stirling Scotland UK