Rippeth, Tom P.
Lincoln, Ben J.
Lenn, Yueng-Djern
Green, J. A. Mattias
Sundfjord, Arild
Bacon, Sheldon
Article History
Received: 4 August 2014
Accepted: 18 December 2014
First Online: 16 February 2015
Competing interests
: The authors declare no competing financial interests.