Affiliation: | 1. Department of Medicine and Epidemiology, University of California-Davis School of Veterinary Medicine, University of California-Davis, 2101 Tupper Hall, One Shields Avenue, Davis, CA 95616, USA;2. Department of Medicine and Epidemiology, University of California-Davis School of Veterinary Medicine, University of California-Davis, 2108 Tupper Hall, One Shields Avenue, Davis, CA 95616, USA |