Institution: | From the ‡Institute of Molecular Cancer Research, University of Zurich, Zurich 8057, Switzerland; ;§Functional Genomics Center of the University of Zurich and ETH, Zurich 8057, Switzerland; ;¶Gastroenterology and Endoscopy Unit, Hospital of Cremona, Cremona 26100, Italy; ;‖University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75211 |