1. Department of Health Education and Health Promotion, Faculty of Health, Mashhad University of Medical Sciences, Mashhad, Iran
2. Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
3. Department of Medical Education Brighton and Sussex Medical School, University of Brighton Falmer campus, Brighton, UK
4. Health Science Research Center, Department of Biostatistics and Epidemiology, School of Health, Mashhad, Iran