Grinberg A, Oliver L, Learmonth J J, Leyland M, Roe W, Pomroy W E
Infectious Diseases Management Group, Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11 222, Palmerston North, New Zealand.
Vet Rec. 2003 Nov 15;153(20):628-31. doi: 10.1136/vr.153.20.628.