1. Pathobiology and Population Science The Royal Veterinary College Hatfield Herts, AL9 7TA UK
2. Clinical Sciences and Services The Royal Veterinary College Hatfield Herts, AL9 7TA UK
3. Royal (Dick) School of Veterinary Studies University of Edinburgh Roslin Midlothian, EH25 9RG UK
4. Department of Veterinary Medicine University of Cambridge Cambridge, CB3 0ES UK