1. Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Aarhus, Denmark
2. Department of Clinical Medicine, Faculty of Health, Aarhus University, Aarhus, Denmark
3. Department of Anaesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark
4. Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
5. Department of Public Health, Section for Biostatistics, Aarhus University, Aarhus, Denmark