1. Department of Cardiology, The Heart Center, Rigshospitalet, Copenhagen, Denmark
2. Department of Cardiology, Zealand University Hospital Roskilde, Roskilde, Zealand, Denmark
3. Clinical Institutes, Copenhagen and Aalborg Universities, Denmark
4. Department of Nephrology, Rigshospitalet, Copenhagen, Denmark
5. Department of Cardiology, Herlev-Gentofte Hospital University of Copenhagen, Copenhagen, Denmark
6. Department of Cardiology and Epidemiology, Nordsjaellands Hospital, Hillerød, Denmark