1. Bahman Aghaie is an assistant professor, Department of Medical-Surgical Nursing, School of Nursing and Midwifery, Qom University of Medical Sciences, Qom, Iran.
2. Monireh Anoosheh is an associate professor, Department of Nursing, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
3. Mahshid Foroughan is an associate professor, Research Center on Aging, Department of Gerontology, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran.
4. Esa Mohammadi is a professor, Department of Nursing, Faculty of Medical Sciences, Tarbiat Modares University
5. Anoshirvan Kazemnejad is a professor, Department of Biostatistics, Faculty of Medicine, Tarbiat Modares University.