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 Petra Wilder-Smith:

This text has been unreferenced on Wikipedia for a very long time. If you can't find a source, be bold and remove it!

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

"

Petra Elfrida Erna Beate Wilder-Smith[citation needed] is a professor and director of dentistry at the Beckman Laser Institute at the University of California, Irvine, and a fellow of the Chao Family Comprehensive Cancer Center at the University of California, Irvine. She is a visiting professor at Aachen University (Germany); and a visiting lecturer at Loma Linda University. Wilder-Smith specializes in the use of light and optics in tracking and treating oral cancer. She has developed innovative[2] noninvasive laser technology used to examine and treat mouth lesions.[3]