1. Department of Social Medicine, Tabriz University of Medical Sciences, and National Public Health Management Center (NPMC), Tabriz, Iran
2. Department of Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
3. Research Center for Medical Education Department of Biostatistics, Tabriz University of Medical Sciences, Tabriz, Iran
4. Department of Environmental Health Engineering, Tabriz University of Medical Sciences, Tabriz, Iran
5. Department of Public Health, Mazandaran University of Medical Sciences, Sari, Iran