1. Cátedra de Cirugı́a de Especies Mayores, Escuela de Medicina Veterinaria, Universidad Nacional, Avenida 1, Calle 9, 86-3000, Heredia, Costa Rica
2. Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 1, 3584 CL Utrecht, The Netherlands
3. Regenerative Medicine Center Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
4. Department of Orthopaedics, Division of Surgical Specialties, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
5. Department of Functional Materials in Medicine and Dentistry, University of Würzburg, Pleicherwall 2, D-97070 Würzburg, Germany