Sai Lakshmi Srikala T, Saika V, Raveendra babu K, and Chinna Eswaraiah M, “Assessment of Prescription Pattern Among COPD Patients in Departments of General Medicine Ward and Pulmonology in Tertiary Care Hospitals of Khammam Region”, Int. J. Res. Pharm. Sci., vol. 11, no. 2, pp. 1798–1806, Apr. 2020.