1. MIRA Institute for Biomedical Technology and Technical Medicine, Department of Biomaterials Science and Technology; University of Twente; Enschede the Netherlands
2. Collaborative Research Partner Annulus Fibrosus Rupture Program of AO Foundation; Davos Switzerland
3. Department of Oral and Maxillofacial Sciences, Clinicum; University of Helsinki; Helsinki Finland
4. Institute of Biosciences and Medical Technology (BioMediTech); University of Tampere; Tampere Finland
5. University of Groningen, University Medical Centre Groningen, W.J. Kolff Institute; Department of Biomedical Engineering; Groningen the Netherlands