1 From the Departments of Neurosurgery (P.H.-R., J.E., I.d.-G., N.S.), Neurology (J.E.), and Radiology (M.A.-L.), Donostia University Hospital, San Sebastián, Spain. pelahevia@gmail.com.
2 From the Departments of Neurosurgery (P.H.-R., J.E., I.d.-G., N.S.), Neurology (J.E.), and Radiology (M.A.-L.), Donostia University Hospital, San Sebastián, Spain.