Rare diseases of the digestive system

1Creighton University School of Medicine, Omaha, NE, USA; 2Tongji University School of Medicine Shanghai, China; 3University Hospital Regensburg, Regensburg, Germany; 4University of Texas MD Anderson Cancer Center Houston, TX, USA; 5David Geffen School of Medicine University of California, Los Angeles, CA, USA; 6Department of Physiology, Michigan State University, East Lansing, MI, USA; 7Department of Pathology, Loyola University Medical Center, Maywood, IL, USA; 8University Medical Center of Princeton at Plainsboro, and 9Rutgers University, New Brunswick, NJ, USA