Priestnall S L, Schöniger S, Ivens P A S, Eickmann M, Brachthäuser L, Kehr K, Tupper C, Piercy R J, Menzies-Gow N J, Herden C
Department of Pathology and Infectious Diseases, Royal Veterinary College, Hawkshead Lane, North Mymms, Hertfordshire AL9 7TA.
Vet Rec. 2011 Apr 9;168(14):380b. doi: 10.1136/vr.c6405. Epub 2011 Mar 2.