1. Department of Small Mammal Reptile and Avian Diseases University of Veterinary Medicine Hannover Hannover Germany
2. Veterinary Clinic Haar Haar Germany
3. Institute of Biometry and Information Processing University of Veterinary Medicine Hannover Hannover Germany
4. Clinic for Zoo Animals Exotic Pets and Wildlife Vetsuisse Faculty University of Zürich Zürich Switzerland
5. Veterinary Clinic Northeim Northeim Germany
6. Small Animal Clinic Freie Universität Berlin Berlin Germany
7. Veterinary Clinic Posthausen Posthausen Germany