1. Xpand Biotechnology BV, Bilthoven, The Netherlands.
2. Department of Tissue Regeneration, Twente University, Enschede, The Netherlands.
3. Progentix Orthobiology BV, Bilthoven, The Netherlands.
4. Department of Orthopaedic Surgery, Reinier de Graaf Gasthuis, Delft, The Netherlands.
5. Department of Materials, Queen Mary University of London, London, United Kingdom.