Mattia Rediti1, Carlo Messina2. 1. Medical Oncology Unit, Azienda Ospedaliero-Universitaria Careggi, Florence, Italy. 2. Academic Unit of Medical Oncology, Department of Internal Medicine, School of Medicine, Policlinico Hospital San Martino-IST, University of Genoa, Largo R. Benzi 10, 16132, Genoa, Italy. carlo.messi@hotmail.it.