R., P. K.; RATNAM, P. K.; R., P. K. K.; K., K. K. T. V. Clinical profile of patients with chronic obstructive pulmonary disease at a tertiary care hospital. International Journal of Advances in Medicine, [S. l.], v. 7, n. 3, p. 426–430, 2020. DOI: 10.18203/2349-3933.ijam20200652. Disponível em: https://www.ijmedicine.com/index.php/ijam/article/view/2143. Acesso em: 30 apr. 2025.