1. Safety Promotion and Injury Prevention Research Center, Department of Epidemiology, School of public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran;
2. Department of Epidemiology, Research Center for Environmental Determinants of Health (RCEDH), Kermanshah University of Medical Sciences, Kermanshah, Iran;
3. Department of Internal Medicine, Diabetes Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran;
4. Student Research Committee, Department of Epidemiology, School of Public Health, Kermanshah University of Medical Sciences, Kermanshah, Iran;
5. Research Center for Environmental Determinants of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran;
6. Hearing Disorders Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran