1. Research Unit for Plastic Surgery, Odense University Hospital, 5000 Odense, Denmark
2. Department of Clinical Research, University of Southern Denmark, 5230 Odense, Denmark
3. Children’s Orthopaedics and Reconstruction, Aarhus University Hospital, 8200 Aarhus, Denmark
4. Department of Orthopaedics, Faculty of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9, Canada
5. Department of Orthopaedics, BC Children’s Hospital, Vancouver, BC V5Z 4H4, Canada