1. Division of Sustainable Health, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
2. Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
3. Department of Cardiothoracic Surgery, Skåne University Hospital, Lund University, Lund, Sweden
4. Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Aarhus, Denmark
5. Department of Thoracic and Cardiovascular Surgery, Karolinska University Hospital, Stockholm, Sweden
6. Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
7. Department of Cardiothoracic Surgery, Sahlgrenska University Hospital, Gothenburg, Sweden
8. Department of Cardiothoracic Surgery, The Heart Centre, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
9. Heart and Lung Center, Helsinki University Hospital, Helsinki, Finland
10. Research Unit of Surgery, Anesthesia, and Critical Care, University of Oulu, Oulu, Finland
11. Heart Centre, Tampere University Hospital and University of Tampere, Tampere, Finland
12. Department of Cardiothoracic Surgery, Centre for Cardiac, Vascular, Pulmonary and Infectious Diseases. Rigshospitalet, Copenhagen, Denmark
13. Heart Center, Turku University Hospital, Turku, Finland
14. Cardiovascular Medicine Division, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, USA
15. Department of Cardiothoracic and Vascular Surgery, Orebro University Hospital, Orebro, Sweden
16. Division of Cardiac Surgery, Yale University School of Medicine, New Haven, CT, USA
17. Department of Cardiothoracic Surgery, Landspitali University Hospital and Faculty of Medicine, University of Iceland, Reykjavik, Iceland