[1] Otto von Guericke Univ Hosp Magdeburg, Dept Gastroenterol Hepatol & Infect Dis, Leipziger Str 66, D-39120 Magdeburg, Germany
[2] Otto von Guericke Univ Hosp Magdeburg, Inst Pathol, Magdeburg, Germany
[3] Med Univ Innsbruck, Inst Pathol Neuropathol & Mol Pathol, Innsbruck, Austria
[4] Med Univ Graz, Diagnost & Res Ctr Mol BioMed, Inst Pathol, Graz, Austria
[5] Johannes Gutenberg Univ Mainz, Dept Internal Med 1, Mainz, Germany
[6] Johannes Gutenberg Univ Mainz, Dept Gen Visceral & Transplant Surg, Mainz, Germany
[7] Univ Hosp Mainz, Inst Pathol, Mainz, Germany
[8] Leipzig Univ Med Ctr, Dept Med 2, Leipzig, Germany
[9] Leipzig Univ Med Ctr, Univ Canc Ctr Leipzig UCCL, Leipzig, Germany
[10] Univ Hosp Leipzig, Inst Pathol, Leipzig, Germany
[11] Univ Hosp Leipzig, Univ Canc Ctr Leipzig, Leipzig, Germany
[12] Friedrich Alexander Univ Erlangen Nuremberg, Inst Pathol, Klinikum Bayreuth, Bayreuth, Germany
[13] Univ Hosp Frankfurt, Dept Internal Med 1, Main Area Gastroenterol & Hepatol, Frankfurt, Germany
[14] Univ Hosp Frankfurt, Univ Canc Ctr, Frankfurt, Germany
[15] Univ Hosp Bonn, Dept Gen Visceral Thorac & Vasc Surg, Bonn, Germany
[16] Raphaelshosp, Dept Gastroenterol, Munster, Germany
[17] Brandenburg Univ Hosp Visceral Surg, Dept Gen & Visceral Surg, Brandenburg, Germany
[18] Hosp Frankfurt Oder, Dept Gen & Visceral Surg, Frankfurt, Germany
[19] Heidelberg Univ, Univ Med Ctr Mannheim, Dept Surg, Div Surg Oncol & Thorac Surg, Mannheim, Germany
[20] Ludwig Maximilians Univ Munchen, Dept Med 2, Univ Hosp, Munich, Germany
[21] Univ Hosp Cologne, Dept Gen Tumor & Transplantat Surg, Cologne, Germany
[22] Municipal Hosp, Dept Gen & Visceral Surg, Magdeburg, Germany
[23] Otto von Guericke Univ Hosp, AN Inst Qual Assurance Operat Med, Magdeburg, Germany
[24] Otto von Guericke Univ Hosp, Dept Gen Visceral Vasc & Transplantat Surg, Magdeburg, Germany
[25] Philipps Univ Marburg, Human Genet Ctr, Marburg, Germany