1. School Medicine, Ilam University of Medical Science, Ilam, Iran
2. Department of Epidemiology, School of Public Health, Shahroud University of Medical Sciences, Shahroud, Iran
3. Department of Midwifery, Faculty of Nursing and Midwifery, Ilam University of Medical Sciences, Ilam, Iran
4. Clinical Research Development Unit, Imam Hossein Hospital, Shahroud University of Medical Sciences, Shahroud, Iran