1. School of Veterinary Medicine, College of Medical, Veterinary and Life Sciences; University of Glasgow; Glasgow G61 1QH
2. School of Mathematics and Statistics, College of Science and Engineering; University of Glasgow; Glasgow G12 8QQ
3. Vets Now Emergency; Dunfermline FIFE KY11 8SG
4. College of Veterinary Medicine; Michigan State University; East Lansing MI 48824 USA
5. School of Life, Sport and Social Sciences; Edinburgh Napier University; Edinburgh EH11 4BN