1. Department of Occupational Health and Ergonomics, Tabriz University of Medical Sciences, Tabriz, Iran
2. Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, IR Iran
3. Department of Vital Statistics and Epidemiology, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
4. Department of Occupational Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran