1. Departments of Pathology (T.H., M.A., G.K.), University of Kiel, 24105 Kiel, Germany
2. Department of Pathology (T.H.), University of Tübingen, 72076 Tübingen, Germany
3. Institute of Pathology (M.A.), 41462 Facharztzentrum Neuss, Germany
4. Department of Surgical Pathology (A.S., P.U.H., A.P.), University Hospital of Zürich, 8091 Zurich, Switzerland
5. Forensic Medicine (R.S.), University of Kiel, 24105 Kiel, Germany
6. 1st Institute of Pathology and Experimental Cancer Research (A.Z.), Semmelweis University, 1085 Budapest, Hungary
7. Department of Pathology (A.C.), Hospital Beaujon, 92110 Clichy, France
8. Service of Gastroenterology (P.R.), Hospital Beaujon, 92118 Clichy, France
9. Praxis für Innere Medizin (K.-P.S.), 26388 Wilhelmshaven, Germany
10. Department of Molecular Cell Biology (Y.M.H.J., E.-J.M.S.), GROW-School for Oncology and Developmental Biology, Maastricht University Medical Center, 6200 MD Maastricht, The Netherlands
11. Institute of Pathology (N.S.P.), Helmholtz Zentrum Munich, 85764 Neuherberg, Germany
12. Department of Pathology (P.K.), Triemli Hospital, 8063 Zürich, Switzerland
13. Department of Pathology (A.P.), Technische Universität, 81675 München, Germany