1 Social Development and Health Promotion Research Center, Department of Public Health, School of Health, Gonabad University of Medical Sciences, Gonabad, IR Iran.
2 Nursing Department, Shirvan Nursing Faculty, North Khorasan University of Medical Sciences, Bojnurd, IR Iran.
3 Social Development and Health Promotion Research Center, Department of Public Health, School of Health, Gonabad University of Medical Sciences, Gonabad, IR Iran ; Department of Nursing, Quchan Branch, Islamic Azad University, Quchan, IR Iran.