University of Copenhagen - Amager-Hvidovre Hospital, Statens Serums Institut, Odense University Hospital - Department of Cardiology, University of Copenhagen - Herlev & Gentofte University Hospital, Aalborg University, University of Copenhagen, University of Copenhagen - Herlev & Gentofte University Hospital, Bispebjerg and Frederiksberg Hospitals, Aalborg University, Statens Serums Institut, University of Copenhagen, University of Copenhagen - The Heart Center, University of Copenhagen - The Heart Center, Statens Serums Institut, Aarhus University - Aarhus University Hospital, Odense University Hospital, University of Copenhagen - The Heart Center, Aalborg University - Aalborg University Hospital & Clinical Institute, Hospital of Southern Jutland, University of Copenhagen - Department of Cardiology, Bispebjerg and Frederiksberg Hospitals, Aarhus University - Department of Cardiology and University of Copenhagen - The Heart Center