- Correspondence to Dr Joshua A Hirsch, NeuroInterventional Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA;
- Received April 17, 2017
- Accepted April 18, 2017
- First published May 30, 2017.
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.