1. Department of Clinical Sciences, Emergency and Internal Medicine, Lund University, Skåne University Hospital, Lund, Sweden;
2. Department of Clinical Sciences, Clinical Physiology, Lund University, Skåne University Hospital, Lund, Sweden;
3. Department of Clinical Sciences, Cardiology, Lund University, Skåne University Hospital, Lund, Sweden;
4. Department of Cardiology, Skåne University Hospital, Malmö, Sweden