1. Department of Orthopaedics, Sahlgrenska University Hospital, Mölndal, Sweden
2. Department of Orthopaedics, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
3. Department of Radiology, Sahlgrenska University Hospital, Gothenburg, Sweden
4. Department of Radiology, Institute of Clinical Sciences, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
5. Department of Clinical Sciences, Lund University, Lund, Sweden