Colonic Diseases

• LKH Leoben, Abt. für Innere Medizin — Leoben, Styria, Austria
• Medical University of Vienna — Vienna, Austria
• Institute of Oncology Sarajevo — Sarajevo, Bosnia and Herzegovina
• SBALO National Oncology Center — Sofia, Bulgaria

• Herlev Hospital — Herlev, Denmark

• University of Texas MD Anderson Cancer Center — Houston, Texas, United States

• Imperial NHS Trust, St Mary's Hospital, Praed Street — London, United Kingdom

• Cleveland Clinic — Cleveland, Ohio, United States

Not specified

• Sheba Medical Center — Ramat Gan, Israel

• St. Marienkrankenhaus Frankfurt — Frankfurt, Germany

• Institut gustave roussy — Villejuif, France

• University of Alabama at Birmingham — Birmingham, Alabama, United States