1. Small Animal Teaching Hospital; University of Liverpool, Leahurst; Neston Cheshire CH64 7TE UK
2. Institute for Cardiovascular and Medical Sciences; Glasgow Cardiovascular Research Centre; 126 University Place Glasgow G12 8TA UK
3. Department of Civil and Building Engineering; Loughborough University; Loughborough Leicestershire LE11 3TU UK
4. Department of Epidemiology and Population Health; Institute of Infection and Global Health; Faculty of Health and Life Sciences; University of Liverpool; Leahust Neston Cheshire CH64 7TE UK