- Correspondence to Dr N Grytten, Department of Neurology, The Norwegian Multiple Sclerosis Competence Centre, Haukeland University Hospital, Bergen 5021, Norway;
- Received November 12, 2014
- Revised January 5, 2015
- Accepted January 14, 2015
- First published February 24, 2015.
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.