1. Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland.
2. Institute of Food Hygiene, Faculty of Veterinary Medicine, LMU Munich, Munich, Germany.
3. Department of Veterinary Public Health and Animal Pathology, Alma Mater Studiorum, University of Bologna, Bologna, Italy.
4. Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.