[1] Ludwig Maximilians Univ Munchen, Klinikum Grosshadern, Dept Hematol & Oncol, Munich, Germany
[2] Ludwig Maximilians Univ Munchen, Ctr Comprehens Canc, Munich, Germany
[3] Univ Munich, Inst Pathol, D-80539 Munich, Germany
[4] Univ Munich, Klinikum Grosshadern, Ctr Comprehens Canc, Dept Hematol & Oncol, D-80539 Munich, Germany
[5] Gesundheitszentrum St Marien GmbH, Dept Oncol, Amberg, Germany
[6] Onkonet Onkol Ravensburg, Ravensburg, Germany
[7] Klin Herzoghohe, Bayreuth, Germany
[8] UCT Univ Canc Ctr, Krankenhaus Nordwest, Inst Clin Canc Res IKF, Frankfurt, Germany
[9] Stadt Klinikum Neuss Lukaskrankenhaus GmbH, Dept Med 2, Neuss, Germany
[10] Johannes Gutenberg Univ Mainz, Univ Med Ctr, Dept Gastroenterol & Hepatol, D-55122 Mainz, Germany
[11] Med Univ Vienna, Vienna, Austria
[12] Univ Munich, Dept Pathol, Munich, Germany