Sultan KM, Hussain MF, Ismael AA. The relation of Echocardiographic findings to pulmonary Function tests in patients with Chronic obstructive Pulmonary Disease. J Fac Med Baghdad [Internet]. 2009 Apr. 1 [cited 2024 Nov. 22];51(1):17-22. Available from: https://iqjmc.uobaghdad.edu.iq/index.php/19JFacMedBaghdad36/article/view/1160