1. Thuringian Animal Diseases Fund; Animal Health Service; Victor-Goerttler-Str. 4 Jena D-07745 Germany
2. Institute of Animal Breeding and Genetics; Justus Liebig University; Ludwigstraße 21b Gießen D-35390 Germany
3. Hagenow Veterinary Practice; Hagenstraße 32 Hagenow D-19230 Germany