John G. Deaton, MD, graduated with high honors from the University of Texas Medical Branch in 1963. He was board-certified in internal medicine in 1970 and, in 1971, left clinical medicine. Dr. Dea...ver maisJohn G. Deaton, MD, graduated with high honors from the University of Texas Medical Branch in 1963. He was board-certified in internal medicine in 1970 and, in 1971, left clinical medicine. Dr. Deaton is a retired senior lecturer from the University of Texas at Austin and the author of seven previous books.ver menos