1 Ph.D. Student in Epidemiology. Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran, Iran. mfg_1354@yahoo.com.
2 Ph.D. Student in Epidemiology. Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran, Iran. khezri.rojan@yahoo.com.
3 Ph.D. Assistant Professor in Medical Education. Department of Medical Education, School of Medicine, Urmia University of Medical Sciences, Urmia, Iran. mohammadpour.yousef@gmail.com.
4 Ph.D. in Epidemiology. Urmia University of Medical Sciences, Urmia, Iran. rohvali4@gmail.com.