Arshad, Amber, and Saira Afzal. “An Update on Preventive Measures of COVID-19 in Pakistan”. Annals of King Edward Medical University 26, no. 1 (May 14, 2020): 1–2. Accessed April 20, 2024. https://annalskemu.org/journal/index.php/annals/article/view/3266.