R. Shrestha, B. Shrestha, S. Shakya Shrestha, A. Pant, B. Prajapati, and B. Karmacharya, “Study of Pre-disposing Factors of Acute Exacerbation of Chronic Obstructive Pulmonary Disease and Antibiotic Prescribing Pattern with Reference to Antibiotic Sensitivity Test”, Kathmandu Univ. Med. J., vol. 13, no. 3, pp. 250–255, Feb. 2017.