Evermann J F, McKeirnan A J, Wilbur L A, Levings R L, Trueblood E S, Baldwin T J, Hughbanks F G
Washington Animal Disease Diagnostic Laboratory, College of Veterinary Medicine, Washington State University, Pullman 99164.
J Vet Diagn Invest. 1994 Jul;6(3):353-7. doi: 10.1177/104063879400600312.