C H Nickel1, A Malinovska2, R Bingisser3. 1. Department of Emergency Medicine, University Hospital Basel, Petersgraben 2, CH-4031 Basel, Switzerland. Electronic address: christian.nickel@usb.ch. 2. Department of Emergency Medicine, University Hospital Basel, Petersgraben 2, CH-4031 Basel, Switzerland. Electronic address: alexandra.malinovska@usb.ch. 3. Department of Emergency Medicine, University Hospital Basel, Petersgraben 2, CH-4031 Basel, Switzerland. Electronic address: roland.bingisser@usb.ch.