1 Program of Immunology and Immunotherapy, Cima Universidad de Navarra, Pamplona, Spain; Navarra Institute for Health Research (IDISNA), Pamplona, Spain; Department of Immunotherapy, Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Pamplona, Spain.
2 Department of Medicine, Massachusetts General, Hospital Cancer Center, Boston, USA; Harvard Medical School, Boston, USA. Electronic address: RSULLIVAN7@mgh.harvard.edu.