Humagain S, Keshari S, Gurung R, Pant P, Pokharel B, Koju R, Bedi T. Electrocardiographic changes in Chronic Obstructive Pulmonary Disease patients with elevated Pulmonary Artery Systolic Pressure. Nepalese Heart J. [Internet]. 2013 Jul. 21 [cited 2024 Dec. 4];8(1):12-5. Available from: https://nepjol.info/index.php/NHJ/article/view/8330