Mumtaz, Y. ., H. . Riaz, M. . Arsalan, S. . Akhtar, H. . Haider, and W. . Manzoor. “Morbidity, Co-Morbidity Profile and Disability Status Among Elderly in Civil Hospital Karachi”. Journal of the Dow University of Health Sciences (JDUHS), vol. 4, no. 1, Apr. 2010, pp. 19-24, https://jduhs.jduhs.duhs.edu.pk/index.php/jduhs/article/view/1289.