1. Enviroscience, Ltd., H-2115 Vácszentlászló, Hungary
2. Intervet Hungaria Kft., H-1095 Budapest, Hungary
3. MSD CDS, 5831 AN Boxmeer, The Netherlands
4. Intervet Deutschland GmbH, 85716 Unterschleissheim, Germany
5. Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
6. Autopsy Path Kft., H-1147 Budapest, Hungary
7. Department of Veterinary Forensics and Economics, University of Veterinary Medicine, H-1078 Budapest, Hungary