atlas of endoscopy was produced by David M. Martin, M.D. and by Ralph
C. Lyons, M.D. Both doctors are certified by the American Board of
Internal Medicine and by the American Board of Gastroenterology.
atlas includesimages and videos of endoscopic findings. Maintained my
Dr. Julio Murra-Saca MD, Chief of the Department of Gastroenterology,
Jerusalem Medical Center, San Salvador, El Salvador.