1. Faculty of Health Sciences and Sport, Institute for Social Marketing and Health, University of Stirling , Stirling , UK
2. Department of Health Promotion, Education and Behavior, Arnold School of Public Health, University of South Carolina , Columbia , South Carolina, USA
3. Departamento de Ciencias de la Salud, Vicerrectoría de Investigación y Proyección, Rafael Landívar University , Guatemala City , Guatemala
4. Unidad de Cirugía Cardiovascular de Guatemala , Guatemala City , Guatemala
5. Centro de Estudios de Estado y Sociedad (CEDES) , Buenos Aires , Argentina
6. Evaluation and Survey Research Center, National Institute of Public Health , Cuernavaca , Mexico
7. Information and Education Center for the Prevention of Drug Abuse (CEDRO) , Lima , Peru
8. Faculty of Sciences and Philosophy, Peruvian Cayetano Heredia University , Lima , Peru
9. School of Public Health, University of Illinois at Chicago , Chicago , Illinois, USA