Smyth Victoria, Trudgett James, Wylie Mildred, Jewhurst Heather, Conway Bronagh, Welsh Michael, Kaukonen Eija, Perko-Mäkelä Päivikki
Agri-Food and Biosciences Institute, Veterinary Sciences Division, Stoney Road, Stormont, Belfast BT4 3SD.
Vet Rec. 2013 Oct 26;173(16):403-4. doi: 10.1136/vr.f6393.