1. Division of Cardiovascular Medicine Department of Medical and Health Sciences Faculty of Health Sciences Linköping University Linköping Sweden
2. Department of Clinical Physiology Heart & Medicine Centre Linköping Sweden
3. Department of Cardiothoracic Surgery Heart & Medicine Centre Linköping Sweden
4. Department of Physiology and Pharmacology Karolinska Institutet Stockholm Sweden
5. Department of Clinical Physiology County Hospital Kalmar Sweden