[1] IRCCS Osped Policlin San Martino, Med Oncol 2, Genoa, Italy
[2] IRCCS Osped Policlin San Martino, Clin Epidemiol Unit, Genoa, Italy
[3] IRCCS Osped Policlin San Martino, UCO Clin Oncol Med, Genoa, Italy
[4] Univ Genoa, Sch Med, Dept Internal Med & Med Specialties, Genoa, Italy