- Correspondence to Dr Brendan N Mclean, Neurology Department, The Royal Cornwall Hospitals NHS Trust, Truro, TR1 3LJ, UK;
- Accepted 10 April 2017
- Published in print 1 August 2017.
- Published online 13 July 2017.
- Published first 24 June 2017.
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.