1. IfU Diagnostic Systems GmbH, Gottfried-Schenker-Straße 18, 09244 Lichtenau, Germany
2. BecherConsult GmbH, Froebelweg 33, 16321 Bernau, Germany
3. Institute of Molecular Pathogenesis, Friedrich-Loeffler-Institut (Federal Research Institute for Animal Health), Naumburger Str. 96a, 07743 Jena, Germany