1.
Athar MH, Zubair UB, Shoaib MS, Zubair HB, Yasir M, Imran M, et al. Getting Negative for COVID-19: Role of Ethnicity and Demographic Factors. PAFMJ [Internet]. 2022 Nov. 4 [cited 2024 Apr. 20];72(5):1649-52. Available from: https://pafmj.org/PAFMJ/article/view/6273