[1]
“A Meta-Analysis of Correlations between Chronic Obstructive Pulmonary Disease, Smoking, and Severity of COVID-19”, J Epidemiol Public Healt, vol. 6, no. 4, pp. 415–425, Dec. 2021, Accessed: Oct. 14, 2025. [Online]. Available: https://jepublichealth.com/index.php/jepublichealth/article/view/437