1. Department of Cardiology, Center for Cardiological Innovation, Oslo University Hospital, Rikshospitalet, PO Box 4950 Nydalen, 0424 Oslo, Norway
2. Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Rikshospitalet, PO Box 4950, 0424 Oslo, Norway
3. Institute for Surgical Research, Oslo University Hospital, Rikshospitalet, PO Box 4950 Nydalen, 0424 Oslo, Norway
4. Unit for Cardiac and Cardiovascular Genetics, Department of Medical Genetics, Oslo University Hospital, Ullevål, PO Box 4956 Nydalen, 0424 Oslo, Norway