1. Center for Health Related Social and Behavioral Sciences Research, Shahroud University of Medical Sciences, Shahroud, Iran
2. Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
3. Department of Neuroscience, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
4. Student Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran