1. Institute of Animal Science; University of Bonn; Bonn Germany
2. Steinmann Institute for Geology; Mineralogy and Palaeontology, University of Bonn; Bonn Germany
3. Clinic for Zoo Animals; Exotic Pets and Wildlife; Vetsuisse Faculty; University of Zurich; Zurich Switzerland
4. National Park ‘Bavarian Forest’; Grafenau Germany
5. Safari Beekse Bergen; Hilvarenbeek The Netherlands
6. Zoo Zurich; Zurich Switzerland
7. Department of Animal Sciences; Georg-August-University Göttingen; Göttingen Germany