M. W. Tariq, M. A. Mushtaq, S. Pervaiz, T. Khan, H. G. Murtaza, and S. A. Naqvi, “An audit of sputum smear microscopy, Gene Xpert and DST in a Tertiary care hospital in patients of suspected MDR/XDR-TB”, Pak J Chest Med, vol. 26, no. 3, pp. 145–149, Sep. 2020.