Agreement of SLD results between laboratories in the “Workpackage 3 of the FP7 TB PAN-NET”.

*All strains were tested in three rounds of testing: round 1 (n = 13), in the intermediate round (n = 11), and in round 2 of the “Workpackage 3 of the FP7 TB PAN-NET”.**All laboratories applied line probe assays, some additionally DNA sequencing methods.***The majority of laboratories applied MGIT 960 DST, some the proportion method on solid media, but the data are incomplete; intermediate level strains were excluded from this analysis.