1. Agri-Food and Biosciences Institute; Veterinary Sciences Division; Stoney Road Stormont Belfast BT4 3SD
2. HK Agri Oy; Kariniementie 2; 27510 Eura Finland
3. Finnish Food Safety Authority Evira; Production Animal and Wildlife Research Unit; PO Box 198 FI-60101 Seinäjoki Finland