1. Department of Nursing, Mother and Child Care Research Center, School of Nursing and Midwifery, Hamadan University of Medical Sciences, Hamadan, Iran
2. Department of Midwifery, Mother and Child Care Research Center, School of Nursing and Midwifery, Hamadan University of Medical Sciences, Hamadan, Iran
3. Research Center of Iranian Blood Transfusion Organization, Hamadan Blood Center, Hamadan, Iran