Khatun, M. .; Hossain, M. .; Sultana, D. .; Islam, M. A. .; Hossain, M. A. . Clinical Profile of Acute Exacerbation of Chronic Obstructive Pulmonary Disease Patients Admitted in Tertiary Care Hospital. Sir Salimullah Med. Coll. J. 2022, 30, 161-167.