1. Department of Hematology, Oncology and Bone Marrow Transplantation with Section Pneumology, Hubertus Wald Tumorzentrum, University Comprehensive Cancer Center Hamburg, University Medical Center Hamburg-Eppendorf, Hamburg, Germany;
2. Department of Tumor Biology, Center of Experimental Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany;
3. Department of Hematology, Hemostasis, Oncology and Stem Cell Transplantation, Hannover Medical School, Hannover, Germany;
4. Research Department Cell and Gene Therapy, Clinic for Stem Cell Transplantation, University Cancer Center Hamburg, University Medical Center Hamburg-Eppendorf, Hamburg, Germany;
5. Department of Pediatrics, University Medical Center Schleswig-Holstein, Kiel, Germany;
6. Institute of Neuropathology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany;
7. Department of Biomedicine and Centre for Cancer Biomarkers, University of Bergen, Bergen, Norway;
8. Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, VIB, Leuven, Belgium; and
9. Laboratory of Angiogenesis and Neurovascular Link, Vesalius Research Center, Katholieke Universiteit Leuven, Leuven, Belgium