1. Department of Reproductive Health and Geriatric Nursing, School of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, Iran
2. Department of Medical Gerontology, Institute of Gerontology, Universiti Putra Malaysia, UPM, Serdang Selangor, Malaysia
3. Department of Social Gerontology, Institute of Gerontology, Universiti Putra Malaysia, UPM, Serdang Selangor, Malaysia
4. Department of Obstetric and Gynecology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran