1. Hôpital Saint-Antoine; Service de Réanimation Médicale; Assistance Publique - Hôpitaux de Paris; Paris France
2. UPMC Univ Paris 06; UMR_S 1136; Institut Pierre Louis d'Epidémiologie et de Santé Publique; Sorbonne Universités; Paris France
3. UMR_S 1136; Institut Pierre Louis d'Epidémiologie et de Santé Publique; INSERM; Paris France
4. Department of Intensive Care Medicine; University Medical Center; Utrecht The Netherlands
5. Department of Anaesthesiology and Intensive Care; Aarhus University Hospital; Aarhus N Denmark
6. Unidade de Cuidados Intensivos Neurocríticos; Hospital de São José; Centro Hospitalar de Lisboa Central; Lisbon Portugal
7. Department of Clinical Medicine; University of Bergen; Department of Anaesthesia and Intensive Care; Haukeland University Hospital; Bergen Norway