Article History
Received: 21 December 2018
Accepted: 5 April 2019
First Online: 19 April 2019
Compliance with ethical standards
:
: Drs Daire Shanahan, James Ashworth-Holland and Konrad Staines declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.
: For this type of study, formal consent is not required.