Rizwana Shahid ,Muhammad Umar ,Raja Bilal Zafar ,Shazia Zeb ,Saima Ambreen ,Muhammad Omar Akram. “Comorbidity of COVID-19 Related Fatalities in Tertiary Care Hospitals of Rawalpindi, Pakistan”. Journal of Rawalpindi Medical College 24, no. Supp-1 (July 17, 2020). Accessed November 9, 2025. https://journalrmc.com/index.php/JRMC/article/view/1422.