1. Hepatitis Research Center, Faculty of Nursing and Midwifery, Lorestan University of Medical Sciences, Khorramabad, Iran
2. Student Scientific Research Center, School of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, Iran
3. Department of the English Language, Faculty of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
4. Department of Epidemiology and Biostatistics, Iran University of Medical Sciences, Tehran, Iran