1. Department of Physiotherapy, Nij Smellinghe Hospital, Compagnonsplein 1, 9202 NN Drachten, Netherlands
2. TNO, Healthy for Life, Leiden, Netherlands
3. Department of Orthopedics and Traumatology, Nij Smellinghe Hospital Drachten, Drachten, Netherlands
4. Center for Biostatistics, VU University Amsterdam, Amsterdam, Netherlands
5. Department for Physiotherapy, Diakonessenhuis Hospital Utrecht, Utrecht, Netherlands
6. Department of Epidemiology, Maastricht University Medical Centre Maastricht, Netherlands
7. CAPHRI School for Public Health and Primary Care, Maastricht, Netherlands
8. Center for Care Technology Research, Maastricht, Netherlands