1. Physical Therapy Sciences, program in Clinical Health Sciences, University Medical Center Utrecht, Utrecht, Netherlands
2. Department Physical Therapy, Expertise Center of Primary Care Groningen, Groningen, Netherlands
3. Department of Rehabilitation Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
4. Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, Netherlands