1. Department of Emergency Medicine, Dijklander Hospital, Hoorn
2. Department of Emergency Medicine, Reinier de Graaf Gasthuis, Delft, the Netherlands
3. BrainWorkshops, London, UK
4. Department of Emergency Medicine, Franciscus Gasthuis en Vlietland, Rotterdam
5. Department of Emergency Medicine, Elisabeth Tweesteden Ziekenhuis, Tilburg
6. STROOM huisartsenzorg, Dordrecht, The Netherlands