- Correspondence to Professor A Chien, Division of Interventional Neuroradiology, David Geffen School of Medicine at UCLA, 10833 LeConte Ave, Box 951721, Los Angeles, CA 90095, USA;
- Received November 30, 2012
- Revised January 14, 2013
- Accepted January 15, 2013
- First published February 6, 2013.
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.