1. Department of Epidemiology and Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
2. Research Center for Health Sciences, Department of Epidemiology and Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran
3. Department of Urology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
4. Department of Community Medicine, School of Medicine, Kurdistan University of Medical Sciences, Kurdistan, Iran