- Correspondence to Dr Virender S Sangwan, Cornea and Anterior Segment Services, L V Prasad Eye Institute, Kallam Anji Reddy Campus, Hyderabad 500034, Andhra Pradesh, India;
- Received September 13, 2012
- Revised February 14, 2013
- Accepted March 2, 2013
- First published March 27, 2013.
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