1. Department of Cardiology; Rigshospitalet, University of Copenhagen; 2141, Blegdamsvej 9 2100 Copenhagen Denmark
2. Department of Cardiology, Nephrology and Endocrinology; Northzealand Hospital, University of Copenhagen; Copenhagen Denmark
3. Department of Clinical Biochemistry; Northzealand Hospital, University of Copenhagen; Copenhagen Denmark
4. Department of Cardiology; Herlev Hospital, University of Copenhagen; Copenhagen Denmark
5. Department of Clinical Biochemistry; Rigshospitalet, University of Copenhagen; Copenhagen Denmark