- Correspondence to Dr Richard Nicholas, Neurology, Imperial College London Faculty of Medicine, London, London, UK;
- Received June 30, 2020
- Revised July 25, 2020
- Accepted August 5, 2020
- First published August 27, 2020.
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.