Burnett Robert C, Blake Mary Kay, Thompson Laura J, Avery Paul R, Avery Anne C
Department of Microbiology, Immunology, and Pathology College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA.
J Vet Intern Med. 2004 Sep-Oct;18(5):768-71. doi: 10.1892/0891-6640(2004)18<768:eoablt>2.0.co;2.