1. Unit of Medical Oncology 2, Department of Translational Research and New Technologies in Medicine and Surgery, Azienda Ospedaliera–Universitaria Pisana, University of Pisa, Pisa, Italy
2. Medical Oncology Unit 1, Department of Clinical and Experimental Oncology, Istituto Oncologico Veneto–IRCCS, Padova, Italy
3. Department of Oncology, University and General Hospital, Udine, Italy
4. Department of Oncology, San Bortolo General Hospital, ULSS8 Berica, East District, Vicenza, Italy
5. Department of Medical Oncology, Hospital of Frosinone, Frosinone, Italy
6. Dipartimento di Oncologia Università Campus Bio-Medico di Roma, Rome, Italy
7. Surgical Pathology and Cytopathology Unit, Department of Medicine, University of Padua, Padova, Italy
8. Unit of Medical Oncology, Hospital Felice Lotti, Azienda Toscana Nord Ovest, Pontedera, Italy
9. Unit of Medical Oncology, Policlinico G. B. Rossi, Azienda Ospedaliera Integrata di Verona, Verona, Italy
10. Unit of Medical Oncology, Hospital San Giovanni Calibita Fatebenefratelli, Rome, Italy
11. Department of Surgical, Medical, Molecular Pathology and Critical Area, University of Pisa, Pisa, Italy
12. Department of Oncology, Hospital San Raffaele IRCSS, Milan, Italy
13. Unit of Medical Oncology, Policlinico Sant’Orsola-Malpighi, Bologna, Italy
14. Department of Medical Oncology, Policlinico Umberto I Sapienza, University of Rome, Rome, Italy
15. Clinical Trials Coordinating Center, Toscano Cancer Institute, University Hospital Careggi, Florence, Italy