Kramer J W, Evermann J F, Leathers C W, McKeirnan A J, Rashti L
Department of Veterinary Clinical Medicine and Surgery, College of Veterinary Medicine, Washington State University, Pullman, WA 99164-6610.
Vet Pathol. 1991 Jul;28(4):338-40. doi: 10.1177/030098589102800412.