1. Department of Midwifery, School of Medicine, Social Determinants of Health Research Center, Gonabad University of Medical Science, Gonabad, Iran
2. Department of Medical-Surgical Nursing, School of Nursing, Nursing Research Center, Gonabad University of Medical Sciences, Gonabad, Iran
3. Institute of Psychiatry, Psychology and Neuroscience, Kings College London, London, UK
4. Department of Epidemiology & Biostatistics, School of Health, Social Development & Health Promotion Research Center, Gonabad University of Medical Sciences, Gonabad, Iran.