Correction to: Nature Methods https://doi.org/10.1038/nmeth.4284, published online 1 May 2017.

In the version of the article initially published, the “Index Reverse” primer in the Supplementary Table 25-26 file and the Supplementary Protocol was incorrect. The updated files with the correct sequence, CAAGCAGAAGACGGCATACGAGATNNNNNNNNGTGACTGGAGTTCAGACGTGTGCTC, are in the Supplementary Information accompanying this amendment.

Supplementary Information is available in the online version of this amendment.