1. Department of Thoracic Anaesthesiology, Rigshospitalet, Copenhagen University Hospital, Denmark
2. Department of Public Health and Primary Care, KU Leuven – University of Leuven, Belgium
3. Institute of Health and Care Sciences, University of Gothenburg, Sweden
4. National Institute of Public Health, University of Southern Denmark, Copenhagen, Denmark
5. Department of Cardiothoracic Surgery, Papworth Hospital, Cambridge, UK
6. Department of Cardio-thoracic Surgery, Rigshospitalet, Copenhagen University Hospital, Denmark
7. Department of Cardiology, Rigshospitalet, Copenhagen University Hospital, Denmark
8. Department of Public Health, University of Copenhagen, Denmark