1. AO Research Institute Davos; Clavadelerstrasse 8 7270 Davos Platz Switzerland
2. Department of Cultural Heritage; University of Salento; Via D. Birago 73100 Lecce Italy
3. Regenerative Medicine Center Utrecht and Department of Orthopaedics; University Medical Center Utrecht; Heidelberglaan 100 3584 CX Utrecht The Netherlands
4. Department of Equine Sciences; Faculty of Veterinary Sciences; Utrecht University; Yalelaan 112 3584 CM Utrecht The Netherlands