1 Department of Cardiology, ProCardio Center for Innovation, Oslo University Hospital, Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
2 Department of Cardiology, ProCardio Center for Innovation, Oslo University Hospital, Rikshospitalet, Oslo, Norway; Department of Cardiology, Akershus University Hospital, Lørenskog, Norway.
3 Department of Cardiology, ProCardio Center for Innovation, Oslo University Hospital, Rikshospitalet, Oslo, Norway.
4 Department of Cardiology, ProCardio Center for Innovation, Oslo University Hospital, Rikshospitalet, Oslo, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway. Electronic address: kristina.haugaa@medisin.uio.no.