Ali, S. F., K. Mahmood, Z. Un Nisa, M. S. Raza, S. Zain, and I. H. Udaipurwala. “Assessment of Psychological Impact on the Health Care Workers Due to Covid-19 Pandemic in Tertiary Care Hospitals of Karachi”. Journal of Liaquat University of Medical & Health Sciences, vol. 21, no. 01, Apr. 2022, pp. 44-49, http://121.52.154.205/index.php/jlumhs/article/view/614.