[1] St Orsola Marcello Malpighi Hosp, Div Oncol, Bologna, Italy
[2] Univ Bologna, St Orsola Malpighi Hosp, Dept Expt Diagnost & Specialty Med, Oncol Unit, Bologna, Italy
[3] Macerata Hosp, Dept Oncol, Macerata, Italy
[4] St Orsola Marcello Malpighi Hosp, Addarii Inst Oncol, Pathol Serv, Bologna, Italy
[5] Polytech Univ Marche Reg, Sch Med, Sect Pathol Anat, United Hosp, Ancona, Italy