GEORGE, J.; V., N. A.; NAIR, T. B.; ., M. Prevalence of pulmonary arterial hypertension in severe chronic obstructive pulmonary disease patients attending tertiary care centre Ernakulam. International Journal of Basic & Clinical Pharmacology, [S. l.], v. 11, n. 2, p. 161–166, 2022. DOI: 10.18203/2319-2003.ijbcp20220416. Disponível em: https://www.ijbcp.com/index.php/ijbcp/article/view/4957. Acesso em: 13 nov. 2025.