Khalid K A, Zakaria Z, Toung O P, McOrist S
Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia.
Vet Rec. 2009 May 16;164(20):626-7. doi: 10.1136/vr.164.20.626.