Emilie Servais1, Sophie Fastre2, Philippe Hantson3. 1. Department of Intensive Care Medicine, Cliniques St-Luc, Brussels, Belgium. 2. Department of Neurology, Cliniques de l'Europe, Brussels, Belgium. 3. Department of Intensive Care Medicine, Cliniques St-Luc, Brussels; Louvain Centre for Toxicology and Applied Pharmacology, Université catholique de Louvain, Brussels, Belgium.