Affiliation: | 1. Department of Epidemiology, Faculty of Health, Ilam University of Medical Sciences, Ilam, Iran;2. Managerial Epidemiology Research Center, Department of Public Health, School of Nursing and Midwifery, Maragheh University of Medical Sciences, Maragheh, Iran;3. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran |