1 1. Dept. of Epidemiology and Biostatistics, Medical School, Kurdistan University of Medical Sciences , Sanandaj, Iran ; 2. Kurdistan Research Centerfor Social Determinants of Health, Medical School, Kurdistan University of Medical Sciences , Sanandaj, Iran.
2 3. Dept. of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences , Tehran, Iran.