Davies, Jane H
Williams, E Mark
Article History
Received: 18 May 2015
Revised: 16 September 2015
Accepted: 24 September 2015
First Online: 3 December 2015
Competing interests
: JHD’s PhD was part sponsored by Huntleigh Healthcare who supported the reported research via provision of equipment and technical support. Huntleigh Healthcare did not, however, have any role in study design and implementation, nor in the analysis of results and formation of conclusions. EMW declares no conflicts of interest.
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