1. Iranian Research Center for HIV/AIDS, Iranian Institute for Reduction of High-Risk Behaviors, Tehran University of Medical Sciences, Tehran, Iran
2. School of medicine, Tehran University of Medical Sciences, Tehran, Iran
3. Department of Health Information Technology, Khalkhal University of Medical Sciences, Khalkhal, Iran
4. Department of Radiology, School of Medicine, University of California, San Diego (UCSD), California, USA
5. School of medicine, Islamic Azad University, Tehran, Iran