1. C.M. Speksnijder, PT, PhD, Physical Therapy Science, Program in Clinical Health Sciences, University Medical Center Utrecht, Intern Post G05.122, PO Box 85.500, 3508 GA Utrecht, the Netherlands; Department of Oral-Maxillofacial Surgery, Prosthodontics and Special Dental Care, University Medical Center Utrecht, Utrecht, the Netherlands; and Radboud University Medical Center, IQ Healthcare, Radboud
2. T. Koppenaal, PT, MSc, Department of Allied Health Professions, Fontys University of Applied Sciences, Eindhoven, the Netherlands.
3. J.A. Knottnerus, PhD, Department of General Practice, Care and Public Health Institute, Maastricht University, Maastricht, the Netherlands.
4. M. Spigt, PT, PhD, Department of General Practice, Care and Public Health Institute, Maastricht University.
5. J.B. Staal, PT, PhD, Research Group of Musculoskeletal Rehabilitation, HAN University of Applied Sciences, and Radboud University Medical Center, IQ Healthcare, Radboud Institute for Health Sciences.
6. C.B. Terwee, PhD, Department of Epidemiology and Biostatistics, EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, the Netherlands.