1. Department of Community Medicine, Faculty of Medicine, Dezful University of Medical Sciences, Dezful, Iran
2. Urology and Nephrology Research Centre, Shahid Beheshti University of Medical Sciences, Tehran, Iran
3. Department of Medical Informatics, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
4. Department of Biostatistics, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran