“Meta-Analysis the Association between Chronic Obstructive Pulmonary Disease Comorbidity and COVID-19 Mortality”, J Epidemiol Public Healt, vol. 6, no. 2, pp. 222–231, Apr. 2021, Accessed: Nov. 04, 2025. [Online]. Available: https://jepublichealth.com/index.php/jepublichealth/article/view/395