Funding for this research was provided by:
European Food Safety Authority (GA/EFSA/BIOHAX/2013/01)
Received: 25 October 2017
Accepted: 8 January 2018
First Online: 18 January 2018
: All animal procedures complied with the Animals (Scientific Procedures) Act 1986 and were approved by the Moredun Research Institute Ethics Committee (E50/14 and E51/14).
: Not applicable.
: The authors declare that they have no competing interests.
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