Z. Khatun, C. K. Roy, T. Sultana, M. Q. Rahman, and A. N. Ahmed, “Role of Light Emitting Diode (LED) Fluorescence Microscopy in the Diagnosis of Smear Negative Pulmonary Tuberculosis”., Bangladesh J Pathol, vol. 26, no. 1, pp. 3–6, Dec. 2011.