1. Geriatric Nursing Department, School of Nursing and Midwifery, Tehran University of medical sciences, Tehran, Iran
2. School of Nursing and Midwifery, Iran University of Medical Sciences, Tehran, Iran
3. Elderly Health Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
4. Department of Medical Surgical Nursing, School of Nursing and Midwifery, Tehran University of medical sciences, Tehran, Iran
5. Honorary Professor in Healthcare for the Elderly, University of Suffolk, UK
6. Nursing and Midwifery Care Research Center, School of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, Iran
7. Spiritual Health Group, Research Center of Quran, Hadith and Medicine, Tehran University of Medical Sciences, Tehran, Iran
8. Critical care and Geriatric Nursing Department, School of Nursing and Midwifery, Tehran University of medical sciences, Tehran, Iran