1. Institute of Animal Breeding and Genetics University of Veterinary Medicine Hannover, Foundation Hannover 30559 Germany
2. Institute of Farm Animal Genetics Federal Research Institute for Animal Health Neustadt 31535 Germany
3. Kleintierpraxis Neuwarmbüchen Isernhagen 30916 Germany
4. Clinic for Horses University of Veterinary Medicine Hannover, Foundation Hannover 30559 Germany
5. Institute of Pathology University of Veterinary Medicine Hannover, Foundation Hannover30559 Germany