Department of Oncology, University Hospital of Pisa, Pisa, Italy. Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy. Oncology and Hemato-Oncology Department, University of Milan, Milano, Italy. Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano, Italy. Comprehensive Cancer Center, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Roma, Italy. Università Cattolica del Sacro Cuore, Roma, Italy. Medical Oncology Unit 1, Department of Clinical and Experimental Oncology, Istituto Oncologico Veneto - IRCCS, Padova, Italy. Medical Oncology, Ospedale degli Infermi, Faenza, Italy. SSD ColoRectal Cancer Unit, Department of Oncology, AOU Città della Salute e della Scienza di Torino, Torino, Italy. Department of Oncology and Palliative Care, Cardinale G. Panico, Tricase City Hospital, Tricase, Italy. Department of Oncology, San Bortolo General Hospital, ULSS8 Berica, East District, Vicenza, Italy. Clinical Trials Coordinating Center, Toscano Cancer Institute, University Hospital Careggi, Firenze, Italy. Department of Oncology, University Hospital of Pisa, Pisa, Italy. chiaracremolini@gmail.com. Department of Translational Research and New Technologies in Medicine, University of Pisa, Pisa, Italy. chiaracremolini@gmail.com.