Saeed, Muhammad, Summak Saeed, Asma Tariq, and Hafiz Sajjad Hyder. “Frequency of Positive PCR Test and Complications in Nasopharyngeal Swabs of Suspected Patients and Contacts of COVID-19 Tested at Allied Hospital Faisalabad”. Annals of Punjab Medical College 15, no. 1 (March 31, 2021): 25-27. Accessed January 14, 2025. https://www.apmcfmu.com/index.php/apmc/article/view/1118.