1 Division of Gastroenterology and, Division of Biomedical Informatics, Department of Medicine, University of California at San Diego, La Jolla, California. Electronic address: sis040@ucsd.edu.
2 Division of Gastroenterology, Department of Medicine, University of California at San Diego, La Jolla, California; Jennifer Moreno Veterans Affairs Medical Center, San Diego, California; Moores Cancer Center, University of California at San Diego, La Jolla, California.