[1] Univ Catania, Policlin G Rodolico San Marco Univ Hosp, Neurol Surg, Dept Med & Surg Sci & Adv Technol GF Ingrassia, Catania, Italy
[2] Univ Catania, Interdisciplinary Res Ctr Brain Tumors Diag & Tre, Catania, Italy
[3] Santa Maria Grazie Hosp ASLNa2Nord, Dept Neurol Surg, Via Domitiana, Naples, Italy
[4] Univ Hosp Policlin Vittorio Emanuele, Dept Radiodiagnost & Oncol Radiotherapy, Via S Sofia, Catania, Italy
[5] Univ Hosp Policlin Vittorio Emanuele, Ctr Expt Oncol & Hematol, Dept Clin & Expt Med, Via S Sofia, Catania, Italy
[6] Univ Catania, Policlin G Rodol San Marco Univ Hosp, Anat Pathol, Dept Med & Surg Sci & Adv Technol GF Ingrassia, Catania, Italy
[7] Catholic Univ, Inst Neurosurg, Via Pineta Sacchetn, Rome, Italy