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Sample quality rating was done by using the Q score, which assessed the numbers of neutrophils (0 to +3) and squamous epithelial cells (-3 to 0) per low-powered field (10x).
AFB – acid fast bacilli; INH – isoniazid; LJ – Löwenstein-Jensen; LPA – line probe assay; MTB – Mycobacterium tuberculosis; NTM – non-tuberculous mycobacteria; RIF – rifampicin.
