This paper, published online in Microbiology on 21 June 2017 contained an error in the hyperlink connecting a URL in the paper to the Cambridge Repository. Readers who downloaded the CamOptimus tool between 21 June and 4 August 2017, are warned that the tool may not perform correctly for some applications. They should not use the link in the published version of the paper.
The publication version of the tool may be obtained by clicking the link here: https://doi.org/10.17863/CAM.10257 or by copying this link into a search engine. Readers with any doubts should contact the authors.
The Editorial and Production staff of Microbiology apologise unreservedly to the authors for this error, which arose in the journal’s production process and does not reflect on the integrity of the authors or on the utility of the CamOptimus tool.