1. Department of Pathology Memorial Sloan Kettering Cancer Center New York NY USA
2. Department of Pathology University Hospital Cologne Germany
3. Visceral Surgery Research Laboratory Clarunis Department of Biomedicine University of Basel Switzerland
4. Department of Pathology University Hospital Muenster Germany
5. Department of Pathology Bethesda Hospital Duisburg Germany
6. Department of Pathology Marienkrankenhaus Hamburg Germany