Affiliation: | 1. Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA;2. Department of Toxicology and Cancer Research, The Maxwell H. Gluck Equine Research Center, College of Agriculture, University of Kentucky, 1400 Nicholasville Road, Lexington, KY 40506, USA |