Veterinary Record: Journal of the British Veterinary Association. 8/16/2003, Vol. 153 Issue 7, p202-208. 7p. 2 Color Photographs, 2 Black and White Photographs, 2 Charts, 1 Graph.
Veterinary Record: Journal of the British Veterinary Association. 11/13/2004, Vol. 155 Issue 20, p636-637. 2p. 2 Color Photographs, 1 Black and White Photograph.