Correction to: Nature Medicine https://doi.org/10.1038/s41591-018-0267-4, published online 03 December 2018.

In the version of this article originally published, Ulrich Steidl’s name was listed as “and Ulrich Steidl.” His name has been updated to “Ulrich Steidl.” The error has been fixed in the print, PDF and HTML versions of this article.