McElhinney Lorraine, Fooks Anthony R, Featherstone Charlotte, Smith Robert, Morgan Dilys
Animal and Plant Health Agency, Woodham Lane, New Haw, Surrey KT15 3NB, e-mail:
Animal and Plant Health Agency, Thirsk Veterinary Investigation Centre, West House, Station Road, Thirsk, North Yorkshire YO7 1PZ.
Vet Rec. 2016 Feb 13;178(7):171-2. doi: 10.1136/vr.i817.