1Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
2Preventive Medicine and Public Health Research Center, Iran University of Medical Sciences, Tehran, Iran
3Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
4Radiation Biology Research Center, Iran University of Medical Sciences, Tehran, Iran
5Community Based Participatory Research Center and Knowledge Utilization Research Center, Tehran University of Medical Sciences, Tehran, Iran
6Department of Public Health, School of Public Health, Mazandaran University of Medical Sciences, Sari, Iran
7Iranian Center of Addiction Studies (INCAS), Tehran University of Medical Sciences, Tehran, Iran
Copyright © 2018 The Korean Society for Preventive Medicine
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CONFLICT OF INTEREST
The authors have no conflicts of interest associated with the material presented in this paper.