1. Departments of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
2. Radiation Sciences and Diagnostic Radiology, Umeå University, Umeå, Sweden
3. Clinical Physiology, Heart Centre and Department of Surgical and Perioperative Science, Umeå University, Umeå, Sweden
4. Radiation Sciences, Biomedical Engineering, Umeå University, Umeå, Sweden