Cook A K, Allen A K, Espinosa D, Barr J
Department of Small Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX 77843, USA.
J Vet Intern Med. 2011 Nov-Dec;25(6):1454-7. doi: 10.1111/j.1939-1676.2011.00801.x. Epub 2011 Sep 21.