Correction to: Nature Medicine https://doi.org/10.1038/s41591-023-02699-5, published online 7 December 2023.

In the version of the article initially published, in the “Stem cells for Parkinson’s disease” section, the text reading “It is important both because it is one of the few trials testing a human embryonic stem cell therapy…” previously said “…it is the first time a human embryonic stem therapy is being tested …”. In the “Intervention model for infant mental health” section, the phrase now reading “the Best Services Trial (BeST?), led by Helen Minnis at the University of Glasgow, will investigate …” originally omitted to acknowledge Helen Minnis. Additionally, the affiliation of Dennis Ougrin has been updated to read “Professor of Child and Adolescent Psychiatry at Queen Mary University of London, London, UK”. These changes have been made in the HTML and PDF versions of the article.