1. Department of Neurology, Division of Neurosurgery, School of Medicine, University of São Paulo, 05403000 São Paulo, Brazil
2. Neurology Center, Samaritan Hospital, 01232010 São Paulo, Brazil
3. Department of Intensive Care, Neurointensive Care Unit, Pasteur Hospital, 4700 Catamarca, Argentina
4. Department of Neurosurgery, Humberto Lucena Hospital, 58031090 João Pessoa, Brazil