Pervez N, Khan S, Khan R, Khan GA. Frequency and determinants of Respiratory Failure in Acute Exacerbation of Chronic Obstructive Pulmonary Disease Patients: A Cross-Sectional Study. bmcjms [Internet]. 2024 Jul. 3 [cited 2024 Nov. 21];5(1):96-9. Available from: https://bmcjms.org/index.php/bmcj/article/view/282