1. Department of Medical Biochemistry and Microbiology; Zoonosis Science Center, University of Uppsala; Uppsala Sweden
2. Department of Virology; Medicum, University of Helsinki; Helsinki Finland
3. Institute for Environmental Medicine, Karolinska Institutet; Stockholm Sweden
4. Centre for Occupational and Environmental Medicine, Stockholm County Council; Stockholm Sweden
5. The National Veterinary Institute; Uppsala Sweden
6. Section for Infectious Diseases, Department of Medical Sciences; Uppsala University; Uppsala Sweden
7. Symbiant Pathology Expert Centre; Alkmaar The Netherlands