1. Department of Orthopedic Surgery Canisius Wilhelmina Ziekenhuis , Nijmegen ;
2. Department of Orthopedic Surgery Via Sana , Mill ;
3. Department of Orthopedic Surgery Medisch Centrum Leeuwarden , Leeuwarden ;
4. Department of Radiology Alrijne Hospital , Leiderdorp ;
5. Department of Surgery Sint Antonius Ziekenhuis , Utrecht ;
6. Department of Sports Medicine Maxima Medisch Centrum , Veldhoven ;
7. Knee Expert Center , Eindhoven ;
8. Kennisinstituut van de Federatie Medisch Specialisten , Utrecht ;
9. FocusKliniek Orthopedie Haaglanden Medisch Centrum , Den Haag , The Netherlands