Author Affiliations +
Karl Pedersen, Lotte Bjerrum
National Veterinary Institute, Technical University of Denmark, Hangøvej 2, DK-8200 Aarhus N, Denmark
Ole Eske Heuer, Danilo M. A. Lo Fo Wong
National Food Institute, Technical University of Denmark, Mørkhøj Bygade 19, DK-2860 Søborg, Denmark
Birgitte Nauerby
National Veterinary Institute, Technical University of Denmark, Hangøvej 2, DK-8200 Aarhus N, Denmark