Marks S L, Lipsitz D, Vernau K M, Dickinson P J, Draper W, Larsen J A, Fascetti A J
Department of Medicine and Epidemiology, University of California, Davis, Davis, CA 95616, USA.
J Vet Intern Med. 2011 Jul-Aug;25(4):949-53. doi: 10.1111/j.1939-1676.2011.0747.x. Epub 2011 Jul 7.