McQuaid, Harold N.
Muir, Mark F.
Taggart, Laura E.
McMahon, Stephen J.
Coulter, Jonathan A.
Hyland, Wendy B.
Jain, Suneil
Butterworth, Karl T.
Schettino, Giuseppe
Prise, Kevin M.
Hirst, David G.
Botchway, Stanley W.
Currell, Fred J.
Article History
Received: 22 May 2015
Accepted: 4 November 2015
First Online: 20 January 2016
Competing interests
: The authors declare no competing financial interests.