1 Department of Intensive Care, Hospital Erasme, Université Libre de Bruxelles, Route de Lennik 808, 1070 Brussels, Belgium. Electronic address: ftaccone@ulb.ac.be.
2 Department of Critical Care Medicine, Ghent University Hospital, De Pintelaan 185, 9000 Gent, Belgium.
3 Department of Intensive Care, University Hospital of Antwerp, Wilrijkstraat 10, 2650 Edegem, Belgium.
4 Department of Intensive Care, UZ Leuven Ziekenhuis, Herestraat 49, 3000 Leuven, Belgium.
5 Department of General Intensive Care, University Hospital Centre, Domaine universitaire du Sart-Tilman, B-4000 Liege, Belgium.
6 Department of Intensive Care, University Hospital, Mont-Godinne, Belgium, Avenue Docteur Gaston-Therasse 1, 5530 Yvoir, Belgium.
7 Department of Intensive Care, Clinique Notre-Dame de Grâce Gosselies, Chaussée de Nivelles 212, 6041 Charleroi, Belgium.
8 Department of Intensive Care, Cliniques Universitaires St-Luc, Avenue Hippocrate 10, 1200 Brussels, Belgium.