Sara Daud, Asma Ambreen, Aisha Shafique, Shomaila Awan, Asma Sabir, Nabila Zaheer, S. D. A. A. A. S. S. A. A. S. N. Z. “Mortality in Patients With Acute Exacerbation of Chronic Obstructive Pulmonary Disease With Lower and Higher Decaf Scores”. Journal of Rawalpindi Medical College, vol. 26, no. 1, Mar. 2022, doi:10.37939/jrmc.v26i1.1688.