Khatun, Tahera, Aparna Das, Gobinda Chandra Banik, Uma Dhar, Mohiuddin Sharif, Kayanat Yeasmin, and Suchismita Debnath. 2022. “Bacteriological Spectrum of Sputum in Acute Exacerbation of Chronic Obstructive Pulmonary Disease (COPD)”. Journal of Medicine 23 (1):30-35. https://doi.org/10.3329/jom.v23i1.57934.