1. School of Nursing and Midwifery Shahroud University of Medical Sciences Shahroud Iran
2. School of Nursing and Midwifery Tehran University of Medical Sciences Tehran Iran
3. Student's Scientific Research Center, School of Nursing and Midwifery Tehran University of Medical Sciences Tehran Iran
4. Hepatitis Research Center, Nursing and midwifery faculty Lorestan University of Medical Sciences Lorestan Iran