Affiliation: | 1. Private Consultant, 11 Mavisbank Place, Lasswade, Midlothian EH18 1DQ, Scotland;2. The Royal (Dick) School of Veterinary Studies, University of Edinburgh, Roslin, Scotland;3. The Parkway Veterinary Hospital, GKT Enterprises, PC, 3 Southwest Monroe Parkway, Suite Y, Lake Oswego, OR 97035, USA |