1. Division of Clinical Physiology, Department of Medical and Health Sciences, Faculty of Health Sciences; Linköping University; Linköping Sweden
2. Center for Medical Image Science and Visualization; Linköping University; Linköping Sweden
3. Department of Cardiothoracic Surgery; County Council of Östergötland; Sweden
4. Department of Clinical Physiology; County Council of Östergötland; Linköping Sweden