1. Department of Medicine Knappschaftskrankenhaus, Ruhr‐University Bochum Bochum Germany
2. Molecular GI‐Oncology Ruhr‐University Bochum Bochum Germany
3. Institute for Medical Informatics, Statistics and Epidemiology University of Leipzig Leipzig Germany
4. Department of Internal Medicine I University Hospital Bonn Bonn Germany
5. National Center for Hereditary Tumor Syndromes University Hospital Bonn Bonn Germany
6. Institute of Human Genetics University of Bonn Bonn Germany
7. Medizinische Klinik und Poliklinik IV Campus Innenstadt, Klinikum der Universität München Munich Germany
8. Medical Genetics Center Munich Munich Germany
9. Institute of Human Genetics Medical School, Heinrich Heine University Düsseldorf Germany
10. Department of Surgery Technische Universitaet Dresden Dresden Germany
11. Department of Applied Tumour Biology Institute of Pathology, University Hospital Heidelberg Heidelberg Germany
12. Cooperation Unit Applied Tumour Biology German Cancer Research Center (DKFZ) Heidelberg Germany
13. Department for Human Genetics Ruhr‐University Bochum Bochum Germany
14. Surgical Center for Hereditary Tumors Evangelisches Bethesda Krankenhaus Duisburg Germany
15. Institute of Pathology University of Cologne Cologne Germany
16. Department of Medicine St. Joseph‐Stift Bremen Bremen Germany
17. Praxis für Hämatologie und Onkologie MVZ Arnsberg Arnsberg Germany