Katerina Dvorak, PhD, is a Research Associate Professor in the Department of Cell Biology and Anatomy at the College of Medicine of the University of Arizona and a Research Scientist at the Southern Arizona Veterans Affair Health Care System. She is a member of the American Association for Cancer Research, the American Gastroenterological Association, and the World Organization on Specialized Studies of Diseases of Esophagus (OESO). Dr Dvorak studies the role of bile acids and gastric acid in Barrett’s esophagus and esophageal adenocarcinoma. She has published in the areas of cancer prevention, colon carcinogenesis, and Barrett’s esophagus.