S. K. Raja, R. Ullah, S. W. Shah, S. Ambreen, H. Khan, and M. Habib, “Comparative Sensitivity of Smear Microscopy for AFB Versus Gene Xpert/RIF Assay on Endrobronchial Washings of the Sputum Smear Negative/Sputum Scarce Patients with Suspected Pulmonary Tuberculosis”, Pak J Chest Med, vol. 26, no. 4, pp. 201–204, Sep. 2020.