1. Department of Biosafety, Hannover Medical School, Hannover, Germany.
2. Institute of Virology, Hannover Medical School, Hannover, Germany.
3. Institute of Ethics, History and Philosophy of Medicine, Hannover Medical School, Hannover, Germany.
4. Department for Virology Bernhard-Nocht-Institute for Tropical Medicine, Hamburg, Germany.
5. Centre de Recerca en Sanitat Animal, IRTA-CReSA, Barcelona, Spain.