3 Aliasgar Esmail, et al, Comparison of Xpert MTB/RIF (G4) and Xpert Ultra, including trace readouts, for the diagnosis of pulmonary tuberculosis in a TB and HIV endemicsetting https://researchonline.lshtm.ac.uk/id/eprint/4661245/1/1-s2.0-S1201971220301442-main.pdf