Houston Chronicle Bay Area, Feb. 7, 2008 Dr. Bernard F. Morrey of the Mayo Clinic will be the keynote speaker at this year's commencement of the UTMB School of Medicine. A free prostate cancer screening will be held at the UTMB Healthcare Clinic Saturday. Dr. Katrina Parker has written a book for teenagers titled "Living with Diabetes." The Osher Lifelong Learning Institute is holding registration for spring classes.