[1] Azienda Osped Univ Senese, Dipartimento Oncol Med, Ist Toscano Tumori, I-53100 Siena, Italy
[2] Clin Humanitas Gavazzeni, Thorac & GU Oncol Unit, Bergamo, Italy
[3] Clin Dev Oncol MedImmune, Gaithersburg, MD USA
[4] Euganea Med Diagnost Ctr, Dept Radiol, Padua, Italy
[5] AstraZeneca, Global Med Dev, Clin, Immunooncol, Gaithersburg, MD USA