1. Department of Cardiology Copenhagen University Hospital Herlev and Gentofte Copenhagen Denmark
2. Department of Cardiology Copenhagen University Hospital Rigshospitalet Copenhagen Denmark
3. William Harvey Research Institute Barts and the London School of Medicine and Dentistry London UK
4. Department of Health Science and Technology Aalborg University Aalborg Denmark
5. Department of Cardiology Aalborg University Hospital Aalborg Denmark
6. The Danish Heart Foundation Copenhagen Denmark
7. The National Institute of Public Health University of Southern Denmark Odense Denmark