- Correspondence to Dr J Margaret Woodhouse, School of Optometry & Vision Sciences, Cardiff University, Maindy Road, Cardiff CF24 4HQ, UK;
- Received July 16, 2013
- Revised October 29, 2013
- Accepted November 6, 2013
- First published November 26, 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.