1. Department of Clinical Science and Education,
Södersjukhuset, Karolinska Institute, Unit of Orthopaedics, Stockholm
South General Hospital, Stockholm, Sweden.
2. Department of Molecular Medicine and Surgery,
Unit of Diagnostic Radiology, Karolinska University Hospital, Karolinska
Institute, Stockholm, Sweden.
3. Department of Clinical Science and Education, Södersjukhuset, Karolinska
Institute, Unit of Orthopaedics, Stockholm
South General Hospital, Stockholm, Sweden
and Department of Molecular Medicine and Surgery, Unit
of Orthopaedics, Karolinska University Hospital, Karolinska
Institute, Stockholm, Sweden.