1. Department of Laboratory Medicine, Division of Clinical Physiology, Karolinska Institutet, and Unit of Clinical Physiology Karolinska University Hospital Stockholm Sweden
2. Department of Physiology & Pharmacology Karolinska Institutet Stockholm Sweden
3. Department of Orthopaedics Region Jönköping County Eksjö Sweden
4. Department of Biomedical and Clinical Sciences Linköping University Linköping Sweden