1. George-Huntington-Institute, Technology Park Muenster, Muenster, Germany
2. Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
3. Department of Radiology, Universitaetsklinikum Muenster, Muenster, Germany
4. Department of Neurodegenerative Diseases and Hertie-Institute for Clinical Brain Research, University of Tuebingen, Tuebingen, Germany