1. Division of Medical Oncology 2, Regina Elena National Cancer Institute, Rome; Italy
2. Scientific Direction, Regina Elena National Cancer Institute, Rome; Italy
3. Biostatistics Unit, Regina Elena National Cancer Institute, Rome; Italy
4. Department of Medical, Oral and Biotechnological Sciences, University “G. D'Annunzio”, Chieti; Italy
5. Medical Oncology Unit-ASL Frosinone; Italy
6. Medical Oncology Unit, Belcolle Hospital, Viterbo; Italy
7. Oncology Unit I, Azienda Ospedaliera Universitaria Pisana, Pisa; Italy
8. Department of Pathology, Regina Elena National Cancer Institute, Rome; Italy
9. Surgery Division A, Regina Elena National Cancer Institute, Rome; Italy
10. Sbarro Institute for Cancer Research and Molecular Medicine e del Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia; Pennsylvania
11. Department of Medicine, Surgery and Neurosciences; University of Siena; Siena Italy