Román-Muñiz Ivette N, Van Metre David C, Cruz-Arámbulo Robert de J, Basaraba Randall J, Callan Robert J, Withrow Stephen J
Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523, USA.
J Am Vet Med Assoc. 2003 Mar 15;222(6):717-8. doi: 10.2460/javma.2003.222.717.