1. Department of Cardiology, Aarhus University Hospital , Palle Juul-Jensens Blvd. 99, Aarhus N 8200 , Denmark
2. Research & Development, Prehospital Emergency Medical Services , Central Denmark Region, Olof Palmes Allé 34, Aarhus N 8200 , Denmark
3. Department of Clinical Medicine, Aarhus University , Palle Juul-Jensens Blvd. 82, Aarhus N 8200 , Denmark
4. Department of Anaesthesiology, Randers Regional Hospital , Skovlyvej 15, Randers NØ 8930 , Denmark
5. Department of Cardiology, Viborg Regional Hospital , Heibergs Alle 5A, Viborg 8800 , Denmark
6. Department of Internal Medicine, Horsens Regional Hospital , Sundvej 30, Horsens 8700 , Denmark