1. NeuroCritical Care Unit, Virgen del Rocío University Hospital, IBIS/CSIC/University of Seville, Seville, Spain.
2. Department of Clinical Biochemistry, Virgen del Rocío University Hospital, IBIS/CSIC/University of Seville, Seville, Spain.
3. Department of Preventive Medicine and Public Health, IBIS/CSIC/University of Seville, Seville, Spain.