1. Department of Clinical Sciences, Orthopaedics, Lund University, Lund, Sweden
2. Rehabilitation Engineering Centre, Musgrave Park Hospital, Belfast Health & Social Care Trust, Belfast, Northern Ireland
3. Research Centre of Movement Science, Department of Physiotherapy, University of Iceland, Reykjavik, Iceland
4. Department of Medical Sciences, Division of Clinical Diabetology and Metabolism, Uppsala University, Uppsala, Sweden
5. Centre for Clinical Research, Uppsala University-Region Västmanland, Västerås, Sweden