Siddiqui, M.N.A. et al. 2018. Factors Associated with Hospital Admission in Patients with Acute Exacerbation of Chronic Obstructive Pulmonary Disease in a Teaching Hospital. TAJ: Journal of Teachers Association. 28, 2 (Dec. 2018), 52–57. DOI:https://doi.org/10.3329/taj.v28i2.39079.