1. Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Ringvej 75, 2730 Herlev, Denmark
2. Department of Internal Medicine and Geriatrics, Herlev and Gentofte Hospital, University of Copenhagen, Ringvej 75, 2730 Herlev, Denmark
3. Clinical Research Centre, Amager and Hvidovre Hospital, University of Copenhagen, Kettegård Alle 30, 2650 Hvidovre, Denmark
4. Department of Emergency Medicine, Bispebjerg Hospital, University of Copenhagen, Bispebjerg Bakke 23, 2400 Copenhagen, Denmark
5. Department of Emergency Medicine, Herlev and Gentofte Hospital, University of Copenhagen, Herlev Ringvej 75, 2730 Herlev, Denmark
6. Department of Public Health, University of Copenhagen, Section of Biostatistics, Øster Farimagsgade 5, 1014 Copenhagen, Denmark
7. Center for Statistical Science, Peking University, No. 5 Yiheyuan Road Haidian District, Beijing 100871, China
8. Department of Cardiology, Rigshospitalet, University of Copenhagen, Blegdamsvej 9, 2100 Copenhagen, Denmark
9. Department of Anaesthesia, Centre of Head and Orthopaedics, Rigshospitalet, University of Copenhagen, Blegdamsvej 9, 2100 Copenhagen, Denmark