We’ve put some small files called cookies on your device to make our site work.
We’d also like to use analytics cookies. These send information about how our site is used to a service called Google Analytics. We use this information to improve our site.
Let us know if this is OK. We’ll use a cookie to save your choice. You can read more about our cookies before you choose.
Change my preferences
I'm OK with analytics cookies
National Patient Safety Alert on risk of death from unintended administration of sodium nitrite.