- Correspondence to Dr T Liebig, Department of Radiology and Neuroradiology, University Hospital of Cologne, Kerpener Str 62, Cologne 50937, Germany;
- Received June 8, 2015
- Revised July 21, 2015
- Accepted July 22, 2015
- First published August 14, 2015.
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.