Affiliation: | 1.Department of Pathology and Wildlife Diseases. National Veterinary Institute (SVA), SE-751 89 Uppsala, Sweden;2.Department of Zoology, Stockholm University, 106 91 Stockholm, Sweden;3.Department of Virology, Immunobiology and Parasitology. National Veterinary Institute (SVA), SE-751 89 Uppsala, Sweden;4.Department of Biomedical Sciences and Veterinary Public Health, University of Agricultural Sciences (SLU), SE-751 89 Uppsala, Sweden |