1. Department of Medicine, Levanger Hospital, Nord-Trøndelag Health Trust, Levanger, Norway
2. Department of Cardiothoracic Surgery, Trondheim University Hospital/St Olavs Hospital, Trondheim, Norway
3. MI Lab and Department of circulation and medical imaging, Norwegian University of Science and Technology, Norway
4. Department of Radiology, Levanger Hospital, Nord-Trøndelag Health Trust, Norway