1. Department of Orthopaedics; Erasmus MC, University Medical Centre; Dr. Molewaterplein 50 3015 GE Rotterdam The Netherlands
2. School of Veterinary Medicine, Veterinary Science Centre; University College Dublin; Belfield Dublin 4 Ireland
3. Department of Otorhinolaryngology; Erasmus MC, University Medical Centre; Dr. Molewaterplein 50 3015 GE Rotterdam The Netherlands