1. Laboratory of Biochemical Genetics LAGENBIO, Veterinary Hospital, University of Zaragoza, 50013 Zaragoza, Spain.
2. Service of Equine Surgery and Medicine, Veterinary Hospital, University of Zaragoza, 50013 Zaragoza, Spain.
3. Service of Orthopedic Surgery and Traumatology, University Clinical Hospital Lozano Blesa, 50009 Zaragoza, Spain.
4. Service of Equine Surgery, Veterinary Hospital, Autonomous University of Barcelona, 08193 Barcelona, Spain.