1. Department of Veterinary Biosciences, University of Helsinki, Helsinki, Finland.
2. Haartman Institute, University of Helsinki, Helsinki, Finland.
3. METLA, Finnish Forest Research Institute, Vantaa Research Centre, Vantaa, Finland.
4. Friedrich-Loeffler-Institut, Institute for Diagnostic Virology, Greifswald-Insel Riems, Germany.
5. Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, Finland.
6. Friedrich-Loeffler-Institut, Institute for Novel and Emerging Infectious Diseases, Greifswald-Insel Riems, Germany.
7. College of Veterinary Medicine, Sudan University of Science and Technology, Khartoum, Sudan.
8. HUSLAB, Helsinki University Central Hospital, Helsinki, Finland.