Ambrisko Tamas D, Sleeper Meg M, Driessen Bernd
Department of Clinical Studies-New Bolton Center, George D. Widener Hospital for Large Animals, School of Veterinary Medicine, University of Pennsylvania, Kennett Square, Philadelphia, PA 19348-1692, USA.
J Am Vet Med Assoc. 2008 Nov 15;233(10):1548-50. doi: 10.2460/javma.233.10.1548.