1. Division of Medical Oncology, Fondazione IRCCS San Gerardo dei Tintori, 20900 Monza, Italy
2. School of Medicine and Surgery, University of Milano Bicocca, 20126 Milan, Italy
3. Medical Oncology Unit, University Hospital of Parma, 43126 Parma, Italy
4. Thoracic Medical Oncology, Istituto Nazionale Tumori, IRCCS “Fondazione G. Pascale”, 80131 Naples, Italy
5. Department of Medicine and Surgery, University of Parma, 43126 Parma, Italy