1 Department of Large Animal Sciences, Faculty of Life Sciences, University of Copenhagen, Grønnegårdsvej 8, 1870 Frederiksberg C, Denmark ; Division of Food Safety and Consumer Policy, Ministry of Agriculture, Forestry and Fisheries, 1-2-1 Kasumigaseki Chiyodaku, Tokyo 100-8950, Japan.
2 Department of Large Animal Sciences, Faculty of Life Sciences, University of Copenhagen, Grønnegårdsvej 8, 1870 Frederiksberg C, Denmark ; National Veterinary Institute, Technical University of Denmark, Bülowsvej 27, 1870 Frederiksberg C, Denmark.
3 Istituto Zooprofilattico Sperimentale delle Venezie, SCT1, Via San Giacomo 5, 37135 Verona, Italy.
4 Department of Large Animal Sciences, Faculty of Life Sciences, University of Copenhagen, Grønnegårdsvej 8, 1870 Frederiksberg C, Denmark.