1 Department of Neurosurgery, IRCCS Ospedale Policlinico San Martino, Genova, Italy; Dipartimento di Neuroscienze, Riabilitazione, Oftalmologia, Genetica e Scienze Materno-Infantili (DINOGMI) Università di Genova, Genova, Italy. Electronic address: pietro.fiaschi@alice.it.
2 Department of Neuroradiology, Istituto Giannina Gaslini Children's Hospital, Genova, Italy.
3 Department of Neurosurgery, Istituto Giannina Gaslini Children's Hospital, Genova, Italy.