1 Division of Gastroenterology, Department of Medicine, University of California San Diego, La Jolla, California; Division of Gastroenterology, Department of Internal Medicine, Yeouido St. Mary's Hospital College of Medicine, The Catholic University of Korea, Seoul, South Korea.
2 Divisions of Gastroenterology and Biomedical Informatics, Department of Medicine, University of California San Diego, La Jolla, California. Electronic address: [email protected].