1. Department of Orthopaedics, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands.
2. Department of Otorhinolaryngology, Erasmus MC, University Medical Centre, Rotterdam, The Netherlands.
3. Regenerative Medicine Institute, National Centre for Biomedical Engineering Science and School of Medicine, Nursing and Health Sciences, National University of Ireland, Galway, Ireland.
4. Department of Rheumatology, Radboud University Medical Centre, Nijmegen, The Netherlands.