1. From the Department of Clinical Studies, Ontario Veterinary College, University of Guelph, Guelph, Canada (A.P., A.S., C.G., M.O., B.A.B., A.V., R.A.zL.); Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California-Davis, Davis, California (I.B., P.D.M.); Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Flori