Therefore, in 1945, the Board of Regents voted to establish a medical school at UCLA. In 1947, Stafford L. Warren was appointed as the first dean. Warren had served on the Manhattan Project while on leave from his post at University of Rochester School of Medicine. His choice of core faculty consisted of his former associates at Rochester in Andrew Dowdy as the first professor of radiology, John Lawrence as the first professor of medicine, and Charles Carpenter as the first professor of infectious diseases. Along with William Longmire Jr., a 34-year-old surgeon from Johns Hopkins, the group was called the Founding Five.