1. Faculty of Veterinary Medicine; Clinic of Small Animal Surgery and Reproduction at the Centre for Clinical Veterinary Medicine; Ludwig-Maximilians-University; Munich Germany
2. Laboklin GmbH & Co.KG; Bad Kissingen Germany
3. Faculty of Veterinary Medicine; Chair of Anatomy, Histology and Embryology; Department of Veterinary Sciences; Ludwig-Maximilians-University; Munich Germany