“Bacterial Colonization Pattern of Sputum in Patients Suffering From Acute Exacerbation of Chronic Obstructive Pulmonary Diseases”, Planet (Barisal), vol. 4, no. 01, p. 8, Sep. 2021, Accessed: Nov. 21, 2024. [Online]. Available: https://bdjournals.org/index.php/planet/article/view/25