1. Department of Rehabilitation Sciences; KU Leuven; Leuven Belgium
2. Center for Motion Analysis; Division of Orthopaedics; Connecticut Children's Medical Center; Farmington CT USA
3. Department of Development and Regeneration; KU Leuven; Leuven Belgium
4. Department of Orthopedics; University Hospitals Leuven; Leuven Belgium
5. Nuffield Orthopaedic Centre; Oxford University Hospitals NHS Trust; Oxford UK
6. Clinical Motion Analysis Laboratory; University Hospitals Leuven; Leuven Belgium
7. Gillette Children's Specialty Healthcare; St. Paul MN USA
8. Faculty of Engineering Science; KU Leuven; Leuven Belgium