“Diagnostic Dilemma in the Routine Diagnosis of Non-Resolving Pneumonia in Elderly Patients: a Cross-sectional Study”, J Fatima Jinnah Med Univ, vol. 11, no. 1, Nov. 2018, Accessed: Apr. 24, 2026. [Online]. Available: https://www.jfjmu.com/index.php/ojs/article/view/27