1. Department of Biomedical Sciences and Veterinary Public Health, Swedish University of Agricultural Sciences, Uppsala, Sweden
2. Department of Veterinary Microbiology and Parasitology, Sokoine University of Agriculture, Morogoro, Tanzania
3. Botswana National Veterinary Laboratory, Gaborone, Botswana
4. Department of Veterinary Services, Ministry of Agriculture, Livestock and Fisheries, Dar-es-Salaam, Tanzania
5. Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden