Funding
This study was part funded by the Sydney School of Veterinary Science, University of Sydney.
Acknowledgements We thank the librarians at the University of Sydney for their assistance with this study. This study was completed in partial fulfilment for the requirements of the Doctor of Veterinary Medicine degree, The University of Sydney (JKG). Dr Wiley is supported by an NHMRC Investigator Grant (Grant number 2008650). Dr Thompson is funded by the New South Wales Ministry of Health under the New South Wales Health Prevention Research Support Program.