1. K.G. Jebsen Center of Exercise in Medicine, Faculty of Medicine; Norwegian University of Science and Technology; Trondheim Norway
2. Department of Circulation and Medical Imaging; Norwegian University of Science and Technology; Trondheim Norway
3. Department of Clinical Services; St. Olav's University Hospital; Trondheim Norway
4. Department of Medicine, Levanger Hospital; Nord-Trøndelag Health Trust; Levanger Norway
5. Department of Cardiology; St. Olav's University Hospital; Trondheim Norway