- Correspondence to Dr Urs Fischer, Department of Neurology, University of Bern, Bern 3012, Switzerland;
- Received February 7, 2018
- Revised March 26, 2018
- Accepted April 3, 2018
- First published April 28, 2018.
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.