- Correspondence to Dr Bas de Groot, SEH, LUMC, Albinusdreef 2, Postbus 9600, Leiden, Zuid Holland 2300 RC, The Netherlands;
- Received November 14, 2012
- Revised January 15, 2013
- Accepted January 17, 2013
- First published February 14, 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.