Ahmad, Aftab, Hamid U Rehman, Ihtisham, Tayyab Rasheed, Ali Khan, and Saqib Malak. 2023. “Early Detection of ENT Symptoms in Mild to Moderate COVID-19 Cases: A Case Control Study”. Pakistan Journal of Chest Medicine 29 (2):230-36. https://www.pjcm.net/index.php/pjcm/article/view/900.