1. Pathology Unit; National Veterinary School of Alfort; 9 avenue du Général de Gaulle 94700 Maisons-Alfort France
2. Animal Health and Veterinary Laboratories Agency (AHVLA) Surveillance Centre; Thirsk North Yorkshire UK
3. Castle Veterinary Surgeons; Highway Cottage, Bowes Road, Barnard Castle Co. Durham UK
4. Pathology Unit; Specialist Scientific Support Department; AHVLA Lasswade; Bush Loan, Penicuik Midlothian EH26 0PZ UK