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J Antimicrob Chemother 2018; 73: 3049–52
In the original published version of this article, in the Results section of the Abstract, ‘17- and 740-fold’ should have read ‘40- and >940-fold’. In the second paragraph of the Results and discussion section, ‘740- and 8-fold’ should have read ‘>940- and >8-fold’. The errors have now been corrected in the online version of the article.
The authors apologize for these errors.
