1. Institute for Tumor Biology and Experimental Therapy, Georg-Speyer-Haus, Frankfurt, Germany;
2. Institute of Clinical Chemistry, Klinikum rechts der Isar, Technical University Munich, Munich, Germany;
3. Department of Molecular Biomedical Research, VIB, VIB-Ghent University, Ghent (Zwijnaarde), Belgium;
4. Institute of Experimental Cancer Research, Comprehensive Cancer Center and University Hospital Ulm, Ulm, Germany;
5. Institute of Clinical Molecular Biology and Tumor Genetics, Helmholtz Zentrum München, Munich, Germany; and
6. Department of Biosystems Science and Engineering, Swiss Federal Institute of Technology in Zurich, Basel, Switzerland