Galveston County Daily News, April 16, 2007 GALVESTON - The University of Texas System Board of Regents today will interview four candidates and name finalists for the position of president of the island's medical branch. The candidates are vying to replace Dr. John Stobo, who said he would resign Aug. 31. The candidates include an island doctor and another who would be the first African-American to lead the institution. They are: Dr. David L. Callender, associate vice chancellor and chief executive officer of the University of California-Los Angeles Hospital System; Dr. Arthur L. Kellermann, professor in the Department of Emergency Medicine at Emory University School of Medicine in Atlanta; Dr. David G. Nichols, vice dean for education at The Johns Hopkins School of Medicine in Baltimore; Dr. Courtney M. Townsend Jr., professor and chair of the Department of Surgery at the University of Texas Medical Branch in Galveston.