1. Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences (TUMS), Tehran, Iran
2. Iranian National Center for Addiction Studies (INCAS), Iranian Institute for Reduction of High-Risk Behaviors, Tehran University of Medical Sciences (TUMS), Tehran, Iran
3. Department of Psychiatry, Tehran University of Medical Sciences (TUMS), Tehran, Iran
4. Research Center for Addiction and Risky Behavior (ReCARB), Psychiatric Department, Iran University of Medical Sciences, Tehran, Iran