L. O. Nyang’au, D. E. Amukoye, D. S. Kangethe, and D. J. Onyuka, “False Positive Rifampicin Resistant Report with Xpert Mtb/Rif Assay in Sputum Samples with Bacterial Grade of Low and Very Low: A Case Report”, IJSBAR, vol. 40, no. 2, pp. 186–189, Aug. 2018.