Funding for this research was provided by:
Biotechnology and Biological Sciences Research Council (BB/K015591/1)
Received: 27 October 2017
Accepted: 31 May 2018
First Online: 15 June 2018
Ethics approval and consent to participate
: The study protocols were approved by the University of Liverpool Committee on Research Ethics (ref: VREC246). Farmers who participated in the study signed and completed a Consent Form.
: The authors declare that they have no competing interests.
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