1. Department of Nursing, Faculty of Nursing & Midwifery, Arak University of Medical Sciences, Arak, Iran
2. Students Research Committee, Arak University of Medical Sciences, Arak, Iran
3. Department of Internal Medicine, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran
4. Department of Surgery, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran
5. Department of Biostatistics & Epidemiology, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran