Jatav, V. S., Meena, S. R., Jelia, S., Jain, P., Ajmera, D., Agarwal, V., Dayma, C. L. and Arif, M. (2017) “Echocardiographic findings in chronic obstructive pulmonary disease and correlation of right ventricular dysfunction with disease severity”, International Journal of Advances in Medicine, 4(2), pp. 476–480. doi: 10.18203/2349-3933.ijam20171045.