1. Department of Clinical Medicine, Sapienza University of Rome, Rome, Italy
2. Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
3. Department of Medical Oncology, National Cancer Research Centre Giovanni Paolo II, Bari, Italy
4. Department of Medical Oncology, Catholic University of Sacred Heart, Largo A. Gemelli, Rome, Italy
5. Medical Oncology Unit, Ospedale Sacro Cuore Don Calabria, Verona, Italy
6. Oncology Unit, Antonio Cardarelli Hospital, Naples, Italy
7. Oncology Unit, San Pietro Fatebenefratelli Hospital, Rome, Italy
8. Department of Clinical and Experimental Oncology, Medical Oncology 1, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy
9. Department of Oncology, University Campus Bio-Medico of Rome, Rome, Italy
10. Department of Medical Oncology, Azienda Ospedaliera Civile - Maria Paternò Arezzo, Ragusa, Italy
11. Medical Oncology, Clinical Cancer Centre, IRCCS-Arcispedale S. Maria Nuova, Reggio Emilia, Italy
12. Department of Oncology-Hematology, Guglielmo da Saliceto Hospital, Piacenza, Italy
13. Medical Oncology Unit, S.S. Trinita Hospital, Sora, Italy
14. Division of Medical Oncology, Mariano Santo Hospital, Azienda Ospedaliera, Cosenza, Italy
15. Medical Oncology, Oncology Department, S. Croce & Carle Teaching Hospital, Cuneo, Italy
16. Medical Oncology Department, National Cancer Research Centre Giovanni Paolo II, Bari, Italy
17. Department of Clinical and Molecular Medicine, Faculty of Medicine and Psychology Sapienza, St. Andrea Hospital, Rome, Italy
18. IDI-IRCCS, Rome, Italy