David --
You're right: University of Wisconsin is not listed on the inital page you come to when you click that link above. You have to click on the "Resource List" link under "NCI-designated cancer centers" at the top of the page. Univ of Wisconsin is on that list.
Here's the direct link to the NCI-designated centers:
http://www.oralcancerfoundation.org/resources/cancer_centers.htm -- Leslie