1 Laboratory for Clinical Thrombosis and Hemostasis, Department of Internal Medicine, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, Maastricht, Netherlands.
2 Department of Cardiology, Stavanger University Hospital, Stavanger, Norway.
3 Drammen Heart Center, Drammen, Norway.
4 Department of Clinical Science, Faculty of Medicine, University of Bergen, Bergen, Norway.