- Correspondence to Dr C Counsell, Division of Applied Health Sciences, University of Aberdeen, Polwarth Building, Foresterhill, Aberdeen, AB25 2ZD, UK;
- Received 23 January 2014
- Revised 4 April 2014
- Accepted 7 April 2014
- Published in print 1 February 2015.
- Published online 14 January 2015.
- Published first 22 May 2014.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.