Salwan, Poonam, Juhi Singla, and Shalini Salwan. “Prescription Pattern in the Management of Chronic Obstructive Pulmonary Disease Patients in a Tertiary Hospital: An Observational Study”. International Journal of Basic & Clinical Pharmacology 9, no. 10 (September 22, 2020): 1578–1582. Accessed April 28, 2024. https://www.ijbcp.com/index.php/ijbcp/article/view/4357.