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. and 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), pp. 23-27. doi: 10.3329/jdmc.v28i1.45752.