O'Mahony M C, Healy A M, O'Farrell K J, Doherty M L
Department of Large Animal Clinical Studies, Faculty of Veterinary Medicine, University College Dublin, Belfield, Dublin 4, Republic of Ireland.
Vet Rec. 2006 Nov 11;159(20):680-2. doi: 10.1136/vr.159.20.680.