1. Department of Veterinary Medicine, University of Cambridge, Cambridge, United Kingdom
2. School of Biological, Biomedical and Environmental Sciences, University of Hull, Hull, United Kingdom
3. Department of Medicine, University of Cambridge, Cambridge, United Kingdom
4. The Wellcome Trust Sanger Institute, Wellcome Trust, Cambridge, United Kingdom
5. University of Glasgow, Institute of Biodiversity, Animal Health and Comparative Medicine, Glasgow, United Kingdom
6. Moredun Research Institute, Penicuik, United Kingdom