Pervez, Naveed, Samiullah Khan, Radhia Khan, and Gohar Ali Khan. 2024. “Frequency and Determinants of Respiratory Failure in Acute Exacerbation of Chronic Obstructive Pulmonary Disease Patients: A Cross-Sectional Study”. BMC Journal of Medical Sciences 5 (1):96-99. https://bmcjms.org/index.php/bmcj/article/view/282.