Document Type : Original Article
Authors
1 Student Research Committee, Sabzevar University of Medical Sciences, Sabzevar, Iran
2 Sabzevar University of Medical Sciences, Sabzevar, Iran
3 Department of Anesthesiology, School of Medicine, Sabzevar University of Medical Sciences
4 School o Medicine, Sabzevar university of medical Sciences, Sabzevar, Iran
5 Department of Obstetrics & Gynecology, School of Medicine, Sabzevar University of Medical Sciences, Sabzevar, Iran.
6 Nursing and midwifery department,, Sabzevar university of medical sciences , Sabzevar, Iran
Abstract
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