1. Department of Orthopaedic Surgery, Aarhus University Hospital, Aarhus N, Denmark
2. Department of Children's Orthopaedics, Aarhus University Hospital, Aarhus N, Denmark
3. Department of Clinical Medicine, Aarhus University, Aarhus N, Denmark
4. CP North: Living Life with Cerebral Palsy in the Nordic Countries, Aarhus University Hospital, Aarhus N, Denmark