Hirachan A, Maskey A, Shah RK, KC B, Shareef M, Roka M, et al. Echocardiographic right heart study in patients with chronic obstructive pulmonary disease. Nepalese Heart J. [Internet]. 2017 Nov. 1 [cited 2025 Mar. 10];14(2):9-12. Available from: https://nepjol.info./index.php/NHJ/article/view/18496