1. Department of Internal Medicine and Medical Specialties (DiMI), School of Medicine, University of Genoa, Genoa, Italy
2. U.O. Clinica di Oncologia Medica, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
3. U.O. Oncologia Medica 2, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
4. Lung Cancer Unit, IRCCS Ospedale Policlinico San Martino, Genova, Italy