KRIS-TV Channel 6, Corpus Christi Feb. 12, 2007 CORPUS CHRISTI - Doctors, nurses and medical students volunteered their time Sunday to help patients who otherwise wouldn't be able to afford healthcare. It was part of an event called "Frontera De Salud."  About 20 medical volunteers from Corpus Christi and San Antonio spent their afternoon at St. Anthony's Catholic Church in Robstown.  They provided services like diabetes and hypertension screenings, along with giving folks information about Medicare and Medicaid. "The project today is to go out into the community, educate ourselves about the community, but also begin to help the community with prevention efforts...in particular diabetes," said Kirk Smith, Executive Director, Frontera De Salud, University of Texas Medical Branch at Galveston. About a hundred people turned out Sunday to take advantage of the free testing.