1. From The Regional Veterinary Referral Center, Springfield, Virginia (R.N.); University of Wisconsin-Madison Veterinary Medical Teaching Hospital, Madison, Wisconsin (R.C.); Carlson College of Veterinary Medicine, Oregon State University, Corvallis, Oregon (K.M.C.); Centre Veterinaire Rive-Sud, Brossard, Quebec, Canada (L-P.d.L.); Red Bank Veterinary Hospital, Tinton Falls, New Jersey (M.A.M.); Me