- Correspondence to Dr Franziska Bucher, Department of Ophthalmology, University of Cologne, Kerpener Strasse 62, Cologne, NRW 50924, Germany;
- Received June 21, 2013
- Revised November 12, 2013
- Accepted December 11, 2013
- First published January 10, 2014.
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.