1. Student Research Committee, School of Nursing and Midwifery, Iran University of Medical Sciences, Tehran, Iran
2. Department of Public Health, School of Public Health, Zanjan University of Medical Sciences, Zanjan, Iran
3. Department of Public Health and Community Medicine, Tufts School of Medicine, Boston, MA, USA
4. Nursing Care Research Center, School of Nursing and Midwifery, Iran University of Medical Sciences, Tehran, Iran