Kumar, A., R. Agrawal, V. K. Tiwari, A. Khurana, J. Khan, and N. Akbar. “Clinical and Etiological Profile of the Patients Presenting With Pleural Effusion: Clinical and Etiological Profile of the Patients Presenting With Pleural Effusion”. National Journal of Integrated Research in Medicine, vol. 8, no. 2, Feb. 2018, pp. 126-9, http://nicpd.ac.in/ojs-/index.php/njirm/article/view/1219.