1. Rijnlands Rehabilitation Centre; Leiden The Netherlands
2. Sophia Rehabilitation; The Hague The Netherlands
3. Department of Medical Statistics; Leiden University Medical Center; Leiden The Netherlands
4. Department of Rehabilitation Medicine, Research School of CAPHRI; Maastricht University; The Netherlands
5. Adelante Centre of Expertise in Rehabilitation and Audiology; Hoensbroek The Netherlands
6. Department of Physical Therapy; South University of Applied Sciences; Heerlen The Netherlands
7. Dept of Orthopaedics, Rehabilitation and Physical Therapy; Leiden University Medical Center; Leiden The Netherlands