1.
Sunkara K, Allam V, Shukla S, Chellappan DK, Gupta G, MacLoughlin R, et al. COVID-19 in underlying COPD Patients. EXCLI J. [Internet]. 2021 Feb. 5 [cited 2024 Jul. 19];20:248-51. Available from: https://www.excli.de/index.php/excli/article/view/3322