Document Type : Original Article
Authors
1 M.Sc. of Midwifery, Gerontological Care Research Center, School of Nursing and Midwifery, North Khorasan University of Medical Sciences, Bojnurd, Iran.
2 B.Sc. of Midwifery, Bentolhoda Medical, Research, and Educational Center, North Khorasan University of Medical Sciences, Bojnurd, Iran.
3 M.Sc. of Statistics and Epidemiology, Faculty of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran.
4 M.Sc. of Midwifery, Instructor, School of Nursing and Midwifery, North Khorasan University of Medical Sciences, Bojnurd, Iran.
Abstract
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