- Correspondence to Dr Danny Mitry, Clinical Research Fellow, National Institute of Health Research (NIHR) Biomedical Research Centre, Moorfields Eye Hospital NHS Foundation Trust, City road, London EC1V 2PD, UK;
- Received April 17, 2013
- Revised July 31, 2013
- Accepted August 17, 2013
- First published September 13, 2013.
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