Correction to: Nature Medicine https://doi.org/10.1038/s41591-020-1038-6, published online 17 August 2020.

In the version of this article initially published online, a statement of support was missing from the Acknowledgements section. The correct ending of the fourth sentence of that section is as follows: “...; and Royal Society Grant IES\R3\170319 (A.C.H. and F.D.R.).” The error has been corrected in the print, HTML and PDF versions of the article.