1. Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
2. Department of Medical Oncology, VU University Medical Center, Amsterdam, The Netherlands
3. The Center for Immuno-Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts, USA
4. Department of Pathology, Ospedale di Circolo, Varese, Italy
5. Division of Cancer Epidemiology and Genetics, National Cancer Institute, Rockville, Maryland, USA
6. Department of Molecular Medicine, University of Pavia and Policlinico S. Matteo, Pavia, Italy
7. Department of Medical Oncology, Hospital Clínico Universitario de Valencia, Valencia, Spain
8. Department of Pathology, Brigham and Women's Hospital, Boston, Massachusetts, USA
9. Cancer Program, The Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA