1. Division of Cancer Treatment and Diagnosis, National Cancer Institute, Bethesda, Maryland, USA;
2. Erasmus University Medical Center, Cancer Institute and Cancer Genomics, Netherlands Centre, Rotterdam, The Netherlands;
3. Department of Clinical Neurosciences, University of Lausanne and Cancer Centre, University Hospital Zurich, Lausanne and Zurich, Switzerland;
4. EORTC, Brussels, Belgium;
5. Department of Medicine, Harvard Medical School and Kraft Family Blood Center, Dana-Farber Cancer Institute, Boston, Massachusetts, USA