Khatun, H., Rahman, M. M., Chowdhury, H. A., Islam, M. A., Touhiduzzaman, M., Ahmad, M. M., Hassan, M. R., Md Ashrafuzzaman, -, Ahmed, M. A. U., & Hossain, M. Z. (2020). Cardiopulmonary Exercise Test in evaluation of Functional Capacity in patients with Chronic Obstructive Pulmonary Disease. Journal of Dhaka Medical College, 28(1), 23-27. https://doi.org/10.3329/jdmc.v28i1.45752