S. . Ahammed, M. S. . Ullah Sarker, and M. Z. . Ali, “Diagnostic Value of Bronchoalveolar Lavage Examination in Sputum Negative Patients for AFB in Suspected Pulmonary Tuberculosis”, Khwaja Yunus Ali Medical College Journal, vol. 12, no. 2, pp. 84–87, Sep. 2021.