1. Intensive Care Unit, Félix Guyon Hospital, University Teaching Hospital of La Réunion, Saint Denis, France;
2. René Labusquière Centre of Tropical Medicine, University of Bordeaux, Bordeaux Cedex, France;
3. UMR 1094 Neuroépidémiologie Tropicale, University of Limoges, Limoges, France;
4. Unité de Soutien Méthodologique, Saint Denis, France