1. Department of Clinical Physiology, Division of Medical Diagnostics; Jönköping Hospital; Jönköping Sweden
2. Department of Clinical Sciences; Lund University, Skåne University Hospital; Malmö Sweden
3. Division of Cardiovascular Medicine, Department of Medical and Health Sciences, Faculty of Health Sciences; Linköping University; Department of Thoracic and Vascular Surgery, Heart and Medicine Center; County Council of Östergötland