1. Orthopedic Department of SMZOst Donauspital; Langobardenstrasse 122; A-1220 Vienna Austria
2. Institute of Animal Breeding and Genetics; University of Veterinary Medicine Vienna, Veterinärplatz1; A-1210 Vienna Austria
3. Institute of Biotechnology in Animal Production; Department IFA-Tulln; University of Natural Resources and Life Sciences; A-3430 Tulln Austria