Gastro One, Germantown, Tennessee, United States
Medical University of Innsbruck, Department of Internal Medicine I, Innsbruck, Austria
University of Miami Crohn's and Colitis Center, Miami, Florida, United States
Shaare Zedek Medical Center, Jerusalem, Israel
Auckland City Hospital, Grafton, Auckland, New Zealand
Chelsea and Westminster Hospital, London, United Kingdom
Massachusetts General Hospital, Boston, Massachusetts, United States
Henry Ford Health System, Detroit, Michigan, United States
James J. Peters VA Hospital, Bronx, New York, United States
Johns Hopkins University (JHU) - The Johns Hopkins Hospital (JHH), Baltimore, Maryland, United States
The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States
Boston Children's Hospital, Boston, Massachusetts, United States
Northwestern Memorial Hospital; Clinical Research Unit, Chicago, Illinois, United States
Tampa General Medical Group, Tampa, Florida, United States
Digestive Disease Associates, PA, Catonsville, Maryland, United States
Stanford Women's Cancer Center, Stanford, California, United States
Allina Health, Virginia Piper Cancer Institute, Minneapolis, Minnesota, United States
Medical Oncology Associates, PS (dba Summit Cancer Centers), Spokane, Washington, United States
Evangelisches Diakoniekrankenhaus Bremen Hämatologie, Bremen, Germany
Universitätsklinikum Heidelberg, Abteilung Innere Medizin V, Heidelberg, Germany
Uniklinik Köln Klinik I für Innere Medizin, Köln, Germany
Ambulante Krebszentrum Schaubstraße, Frankfurt, Brandenburg, Germany
KH Maria Hilf-Franziskushaus, Mönchengladbach, Mönchengladbach, Germany
Klinikum Rechts der Isar der Technischen Universität München, München, Germany