- Correspondence to Dr Corey T McMillan, Department of Neurology, Hospital of the University of Pennsylvania, 3400 Spruce Street, 3 West Gates, Philadelphia, PA 19104, USA;
- Received November 13, 2015
- Revised April 5, 2016
- Accepted May 11, 2016
- First published June 9, 2016.
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.