Spotted something we should check?

What to include

• The article or directory page address.
• The wording or detail that needs attention.
• A source or explanation that helps us check it.

Contact the editorial team

Our contact arrangements are being updated following the site's ownership change. Please check the contact page for the current way to reach us.

How we handle an issue

We check the affected information and update or withdraw it where needed. Corrections to reviewed clinical advice are referred for appropriate review. The original archive's publication dates remain visible.