1. Bristol Veterinary School, University of Bristol, Bristol BS40 5DU, UK
2. NIHR Health Protection Research Unit in Behavioural Science and Evaluation, Population Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BY, UK
3. Lancaster Medical School, Lancaster University, Lancaster LA1 4YW, UK
4. Department of Zoology, University of Oxford, Oxford OX1 3SZ, UK
5. Mathematics Institute, University of Warwick, Warwick CV4 7AL, UK
6. School of Life Sciences, University of Warwick, Warwick CV4 7AL, UK
7. CEMPS, University of Exeter, Exeter, UK
8. The Alan Turing Institute, British Library, 96 Euston Road, London NW1 2DB, UK