- Correspondence to E A Oudeman, Neurosurgical Center Amsterdam, VU University Medical Center, De Boelelaan 1117, Amsterdam 1081 HV, The Netherlands;
- Received March 12, 2013
- Revised April 7, 2013
- Accepted April 9, 2013
- First published May 4, 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.