1. Catharina Hospital, Michelangelolaan 2, P.O. Box 1350, 5602ZA NB Eindhoven, The Netherlands
2. IQ Scientific Institute for Quality of Healthcare (IQ Healthcare), Radboud University Nijmegen Medical Centre, IQ P.O. Box 9101, Healthcare 114, 6500HBGLO Nijmegen, The Netherlands
3. Emergency Department, Catharina Hospital, Eindhoven P.O. Box 1350, 5602ZA NB Eindhoven, The Netherlands