1 Neurosurgical Unit, IRCCS Humanitas Research Hospital, Via Manzoni 56, Rozzano, Milan, Italy; Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy.
2 Neurosurgical Unit, IRCCS Humanitas Research Hospital, Via Manzoni 56, Rozzano, Milan, Italy; Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy. Electronic address: beatrice.bono@humanitas.it.
3 Neurosurgical Unit, IRCCS Humanitas Research Hospital, Via Manzoni 56, Rozzano, Milan, Italy.
4 Biostatistics Unit, Humanitas Clinical and Research Center, IRCCS, Rozzano, Milan, Italy.
5 Neurosurgical Unit, University Hospital of Udine (ASUFC), Udine, Italy.