Affiliation: | 1. Small Animal Hospital, School of Veterinary Sciences, University of Bristol, , Langford, Bristol, BS40 5DU;2. Diagnostic Laboratories, Langford Veterinary Services, School of Veterinary Sciences, University of Bristol, , Langford, Bristol, BS40 5DU;3. TOSOH Bioscience Ltd, , Redditch, B97 6HA |