1. Erasmus MC, University Medical Centre Rotterdam, the Netherlands Department of Orthopaedics, Rotterdam, The Netherlands.
2. Erasmus MC, University Medical Centre Rotterdam, the Netherlands Department of Otorhinolaryngology, Rotterdam, The Netherlands.
3. Erasmus MC, University Medical Centre Rotterdam, the Netherlands Department of Surgery-Traumatology, Rotterdam, The Netherlands.
4. Royal College of Surgeons in Ireland, Department of Anatomy, Dublin, Ireland.