1. Medical Oncology Unit, University Hospital of Parma, Parma, Italy
2. Medical Oncology Unit, Ospedale San Paolo, Savona, Italy
3. Department of Internal Medicine and Medical Specialties (Di.M.I.), University of Genoa, Genoa, Italy
4. Department of Health Sciences, University of Florence, Florence, Italy
5. Department of Pathology, Azienda Ospedaliera Universitaria Integrata Verona, University of Verona, Verona, Italy
6. Medical Oncology Unit, Azienda Ospedaliero Universitaria Consorziale Policlinico di Bari, Bari, Italy