1. Laboratory of Milk Hygiene and Technology; Department of Food Hygiene and Technology; School of Veterinary Medicine; Faculty of Health Sciences; Aristotle University of Thessaloniki; Thessaloniki Greece
2. Department of Hygiene and Epidemiology; Faculty of Medicine; University of Thessaly; Larissa Greece
3. Laboratory of Hygiene of Foods of Animal Origin; Faculty of Veterinary Medicine; University of Thessaly; Karditsa Greece