Document Type : Original Article
Authors
1 Associate Professor, Department of Obstetrics and Gynecology, School of Medicine, Guilan University of Medical Sciences, Guilan, Iran.
2 M.Sc. of Epidemiology, School of Medicine, Guilan University of Medical Sciences, Guilan, Iran.
3 Resident of Obstetrics and Gynecology, School of Medicine, Guilan University of Medical Sciences, Guilan, Iran.
Abstract
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