Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Konrad Emil Bloch:

This text is part of the article's lead section, so referencing it may be optional. Please see WP:CITELEAD for more information.

"

Konrad Emil Bloch [1] (German pronunciation: [ˈkɔnʁaːt ˈblɔx] ; 21 January 1912 – 15 October 2000[citation needed]) was a German-American biochemist. Bloch received the Nobel Prize in Physiology or Medicine in 1964 (joint with Feodor Lynen) for discoveries concerning the mechanism and regulation of the cholesterol and fatty acid metabolism.[2]