1. deCODE genetics/Amgen, Inc., Sturlugata 8, Reykjavik, Iceland
2. Department of Medicine, Landspitali—The National University Hospital of Iceland, Hringbraut, Reykjavik, Iceland
3. Department of Family Medicine, University of Iceland, Vatnsmyrarvegur 16, Reykjavik, Iceland
4. Department of Development, Primary Health Care of the Capital Area, Alfabakki 16, Reykjavik, Iceland
5. Department of Cardiology, Haukeland University Hospital, Jonas Lies vei 83, Bergen, Norway
6. Faculty of Medicine, University of Iceland, Vatnsmyrarvegur 16, Reykjavik, Iceland
7. Division of Cardiovascular Medicine, Department of Medicine, University of Wisconsin, 600 Highland Ave, Madison, WI, USA
8. Department of Immunology, Landspitali—The National University Hospital of Iceland, Hringbraut, Reykjavik, Iceland
9. Children's Hospital, Landspitali—The National University Hospital of Iceland, Hringbraut, Reykjavik, Iceland
10. Department of Cardiothoracic Surgery, Landspitali—The National University Hospital of Iceland, Hringbraut, Reykjavik, Iceland
11. School of Engineering and Natural Sciences, University of Iceland, Hjardarhagi 4, Reykjavik, Iceland