1. Iranian Research Center for HIV/AIDS, Iranian Institute for Reduction of High-Risk Behaviors, Tehran University of Medical Sciences, Tehran, Iran
2. Department of Nursing Education and Management, Faculty of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, Iran
3. Department of Nursing Education and Management, School of Nursing and Midwifery, Iran University of Medical Sciences, Tehran, Iran
4. Faculty of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, Iran
5. Department of Mathematics–Statistics, Faculty of Sciences, Air University of Shahid Sattari, Tehran, Iran