1. University of Milan, Department of Veterinary Science & Technology for Food Safety, via Trentacoste 2, 20134 Milano, Italy, European Commission, Joint Research Centre, Institute for Health and Consumer Protection, Physical and Chemical Exposure Unit, MAST-Group, TP281, via Fermi 2, 21020 Ispra, Italy, and Mercato Ittico all’Ingrosso, via Lombroso 95, 20137 Milano, Italy