Correction to: Nature Protocols https://doi.org/10.1038/s41596-020-0450-9, published online 18 January 2021.

In the version of this article initially published, the opaque background of some of the labels in Figs. 1 and 2 was omitted, affecting legibility. In another label, in Fig. 2, the nucleotides in the top row were not aligned correctly with those in the bottom row. In addition, the date the paper was received was incorrect. Instead of 29 March 2017, it should have said 21 May 2020. The errors have been corrected in the HTML and PDF versions of the article.