1. Institute of Organic Chemistry, Leibniz University Hannover, Schneiderberg 1B, 30167 Hannover, Germany
2. Department of Molecular and Medical Virology, Ruhr-University Bochum, 44801 Bochum, Germany
3. Federal Research Institute in Animal Health (FLI), Südufer 10, 17493 Greifswald, Insel Riems, Germany
4. Institute for Biochemistry and Research Center for Emerging Infections and Zoonoses (RIZ), University of Veterinary Medicine Hannover, Bünteweg 2, 30559 Hannover, Germany
5. Wallenberg Centre for Molecular Medicine (WCMM), Umeå University, 901 87 Umeå, Sweden
6. Department of Clinical Microbiology, Virology, Umeå University, 901 87 Umeå, Sweden