1. Department of Anesthesiology, Medical Faculty, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
2. Department of Cardiology, Medical Faculty, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
3. Medical Management, Emergency Medical Service, Berlin Fire Brigade, 10150 Berlin, Germany
4. Aachen Institute of Emergency Medicine and Civil Security, Medical Faculty, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany