R., Prasuna K., Praveena Korani Ratnam, Pramod Kumar K. R., and Krishna Kumar T. V. K. 2020. “Clinical Profile of Patients With Chronic Obstructive Pulmonary Disease at a Tertiary Care Hospital”. International Journal of Advances in Medicine 7 (3):426-30. https://doi.org/10.18203/2349-3933.ijam20200652.