[1] Univ Bochum, Dept Hematol & Med Oncol, Marienhosp Herne, D-44625 Herne, Germany
[2] Univ Hosp Essen, Dept Med Oncol, Essen, Germany
[3] Onkol Schwerpunktpraxis Freiburg, Freiburg, Germany
[4] Univ Hosp Munich, Klinikum Rechts Isar, Dept Hematol & Med Oncol, Munich, Germany
[5] Oncosci AG, Wedel, Germany
[6] German Canc Res Ctr, D-6900 Heidelberg, Germany
[7] Univ Freiburg, Tumor Biol Ctr, Freiburg, Germany