1. Department of Medical Psychology, Catharina Hospital, Eindhoven, Netherlands
2. Department of Orthopedics, Section Physical Therapy, Radboud University Medical Center, Nijmegen, Netherlands
3. Department of Surgery, Catharina Hospital, Eindhoven, Netherlands
4. Department of Otorhinolaryngology and Head & Neck Surgery, Radboud University Medical Center, Nijmegen, Netherlands