1. Section for Bacteriology, Pathology and Parasitology; National Veterinary Institute; Technical University of Denmark; Frederiksberg C Denmark
2. Centre for Medical Parasitology; Department of International Health, Immunology, and Microbiology; University of Copenhagen; Copenhagen Denmark
3. Department of Clinical Microbiology; Copenhagen University Hospital; Copenhagen Denmark
4. Grundfos Management A/S; Bjerringbro Denmark
5. Section for Immunology and Vaccinology; National Veterinary Institute; Technical University of Denmark; Frederiksberg C Denmark