Rectal Diseases

• Memorial Sloan-Kettering Cancer Center — New York, United States

• Charité Medical University Berlin Campus Virchow — Berlin, State of Berlin, Germany

• Universitaetsklinikum Carl Gustav Carus, Medizinische Klinik — Dresden, Saxony, Germany
• Westdeutsches Tumorzentrum, Universitaetsklinikum Essen — Essen, Germany
• Universitaetsklinik Mannheim GmbH, III. Medizinische Klinik — Mannheim, Germany

• Medizinische Universitaet Wien, Universitaetsklinik für Chirurgie — Vienna, Austria
• Kreiskrankenhaus Aschersleben — Aschersleben, Germany
• Charite-Campus Benjamin Franklin, Innere Medizin — Berlin, Germany
• Charite-Campus, Virchow-Klinikum, Innere Medizin — Berlin, Germany

• First department of general surgery university of milan — Milan, Italy
• First Department of General Surgery — Milan, Italy

• University of Gießen, Dept. of General Surgery — Giessen, Hesse, Germany

• Surgical Department, University Hospital Gentofte — Hellerup, Denmark

Not specified

• Sacramento VA Medical Center, — Mather, California, United States

• Stony Brook University Cancer Center — Stony Brook, New York, United States