Morrison R B, Collins J E, Harris L, Christianson W T, Benfield D A, Chladek D W, Gorcyca D E, Joo H S
Department of Clinical and Population Sciences, College of Veterinary Medicine, University of Minnesota, St. Paul 55108.
J Vet Diagn Invest. 1992 Apr;4(2):186-8. doi: 10.1177/104063879200400212.