1. Medical Oncology Department, Azienda Ospedaliera Treviglio-Caravaggio, Treviglio, Italy
2. Section of Medical Statistics and Biometry “GA Maccacaro,” Department of Clinical Science and Community, University of Milan, Milan, Italy
3. Internal and Cardiovascular Medicine and Stroke Unit, University of Perugia, Perugia, Italy
4. Clinical Research Department, FADOI Foundation Italian Scientific Society of Internal Medicine, Milan, Italy
5. Medical Affairs Department, Italfarmaco, Cinisello Balsamo, Italy