- Correspondence to Dr Bradley A Gross, Department of Neurological Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA;
- Received June 20, 2018
- Revised July 18, 2018
- Accepted July 21, 2018
- First published August 4, 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.