1. Division of Zoo Animals, Exotic Pets and Wildlife, Vetsuisse Faculty, University of Zurich, Switzerland
2. Institute for Zoo and Wildlife Research (IZW), Berlin, Germany
3. Department of Animal Nutrition, Institute of Animal Science, University of Bonn, Germany
4. Yukon Environment, Fish and Wildlife Branch, Watson Lake, Yukon, Canada
5. Ilomantsi Game Research Station, Ilomantsi, Finland
6. Institute of Veterinary Anatomy I, LM University of Munich, Germany