1. Medical Intensive Care Unit and EA7517, Boreal Study Group, Amiens University Hospital, Amiens, France
2. Department of Statistics, Amiens University Hospital, Amiens, France
3. Department of Intensive Care Medicine, Lapeyronie University Hospital, PhyMedExp, University of Montpellier, INSERM, CNRS, Montpellier, France
4. Intensive Care Unit, Groupe Hospitalier Sud Ile de France, Melun, France
5. Medical-Surgical Intensive Care Unit, Centre Hospitalier de Bretagne Sud, Lorient, France
6. Medical and Surgical Intensive Care Unit, Groupe Hospitalier Paris Saint Joseph, Paris, France
7. Intensive Care Unit, Boreal Study Group, Hôpital de Bethune, Bethune, France