1. Medical Oncology Unit, San Donato Hospital, Azienda Toscana Sud Est, 52100 Arezzo, Italy
2. Medical Oncology Unit, Sant’Andrea Hospital, Azienda Sanitaria Locale 5 Spezzino, 19124 La Spezia, Italy
3. Medical Oncology Unit 2, Santa Chiara Hospital, Azienda Ospedaliero-Universitaria Pisana, 56124 Pisa, Italy
4. Medical Oncology Unit, Livorno Hospital, Azienda Toscana Nord Ovest, 57124 Livorno, Italy
5. Clinical Oncology Unit, Careggi University Hospital, 50134 Florence, Italy
6. Department of Health Sciences, University of Florence, 50134 Florence, Italy
7. Department of Oncology, Hospital of Prato, Azienda USL Toscana Centro, 59100 Prato, Italy