Schulz K S, Steele K E, Saunders G K, Smith M M, Moon M L
Department of Pathobiology, Virginia/Maryland Regional College of Veterinary Medicine, Virginia Polytechnic Institute, Blacksburg 24061-0442.
Vet Pathol. 1994 Nov;31(6):716-8. doi: 10.1177/030098589403100616.