1. Neurotraumatology and Neurosurgery Research Unit (UNINN), Vall d'Hebron University Hospital, Universidad Autònoma de Barcelona, Barcelona, Spain.
2. Department of Neurosurgery, Vall d'Hebron University Hospital, Universidad Autònoma de Barcelona, Barcelona, Spain.
3. Department of Anesthesiology, Vall d'Hebron University Hospital, Universidad Autònoma de Barcelona, Barcelona, Spain.