Jahromi, Reza, Arezoo Avazpour, Maryam Jahromi, and Jalile Alavi. “COVID-19 With Positive Bronchoalveolar Lavage Fluid But Negative Nasopharyngeal and Oropharyngeal Swabs: A Case Report and Insights”. Indian Journal of Case Reports 6, no. 6 (July 25, 2020): 380–382. Accessed February 6, 2023. https://mansapublishers.com/index.php/ijcr/article/view/2425.