1. Nursing and Midwifery School, Students Research Committee, Kermanshah University of Medical Sciences , Kermanshah , Iran
2. Department of Nursing, Faculty of Nursing and Midwifery, Kermanshah University of Medical Science , Kermanshah , Iran
3. School of Nursing and Midwifery , Guilan University of Medical Sciences , Rasht , Iran
4. Anesthesiology Department , Guilan University of Medical Sciences , Rasht , Iran