Correction to: Nature Genetics https://doi.org/10.1038/s41588-019-0483-y, published online 2 September 2019.

In the version of this article initially published, in Table 1, the final three numbers in the ‘Trees’ column were listed as ‘× 106’ but should have been ‘× 103’. In addition, the Acknowledgements had omitted support from the UK Biobank Resource, application number 12788. The errors have been corrected in the HTML and PDF versions of the article.