1. Ghent University, Ghent, Belgium.
2. Dept. of Emergency Medicine, Maria Middelares General Hospital, Ghent, Belgium.
3. Dept. of Emergency Medicine, Sint Lucas General Hospital, Ghent, Belgium.
4. Faculty of Medicine and Health Sciences, University of Antwerp, Wilrijk, Belgium.
5. Dept. of Emergency Medicine, Antwerp University Hospital, Edegem, Belgium.