Accuracy matters after publication too
If we identify a factual error, misleading statement or material omission, we review the underlying evidence and correct the content as promptly as practical.
To report a possible error, outdated information or a disclosure problem, use our contact page. Include the page address and what you think is wrong.
Corrections and routine updates
A correction addresses something that was wrong or materially misleading. Routine updates may reflect new evidence, guidance, availability, links or editorial improvements without meaning the previous version contained a factual error.
Material changes should be made transparently enough that readers are not left with an outdated or false impression.