Correction to: Nature Medicine, published online 06 March 2019.

In the version of this article initially published, the affiliation of Dr. Sandra Geurts reads “Sandra Geurts, an epidemiologist at Radbound University in Nijmegen.” Radbound University is her previous affiliation, and the sentence should have been, “Sandra Geurts, an epidemiologist at Maastricht University Medical Center+ in the Netherlands.”