1. Veterinary Public Health Section, Department of Paraclinical Sciences, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
2. Canadian Research Institute for Food Safety (CRIFS), Department of Food Science, University of Guelph, Guelph, Ontario, Canada
3. Department of Veterinary Medicine, Laboratorio di Ispezione Degli Alimenti di Origine Animale, University of Perugia, Perugia, Italy
4. Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa