1. Department of Psychiatry and Community Health Nursing, School of Nursing and Midwifery, Golestan University of Medical Sciences, Gorgan, Iran
2. Iranian Research Center on Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
3. Faculty member of Paramedical School, Surgical Technology Department, Golestan University of Medical Sciences, Gorgan, Iran
4. Assistant Professor of Epidemiology Department of Biostatistics and Epidemiology School of Health Golestan University of Medical Sciences (GOUMS), Gorgan, Iran
5. Faculty of Nursing, University of Northern British Columbia, Prince George, Canada
6. Department of Clinical Research, Professor, MD, Dept. of Geriatrics, Odense University Hospital, University of Southern Denmark, Odense, Denmark
7. School of Nursing and Midwifery, Golestan University of Medical Sciences, Gorgan, Iran
8. Assistant Professor of Nursing, Faculty member of Midwifery Nursing School, Golestan University of Medical Sciences, Gorgan, Iran
9. Social Determinants of Health Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
10. Iranian Research Center on Aging, Department of Aging, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
11. Faculty of Nursing and Midwifery, Golestan University of Medical Sciences, Gorgan, Iran
12. Assistant Professor, Department of Geriatric Health, Faculty of Health, Mazandaran University of Medical Sciences, Sari, Iran