1. German Primate Centre (DPZ) GmbH, Department of Infection Biology, Goettingen, Germany.
2. European Neuroscience Institute (ENI) Goettingen, Goettingen, Germany.
3. Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore (NUS), Singapore.
4. Cambridge Research Institute, Cancer Research UK, Li Kaa Shing Centre, Cambridge, United Kingdom.
5. Prion and Dementia Research Unit, Department of Neuropathology, University Medical Centre Goettingen, Goettingen, Germany.