- Correspondence to Dr Tanveer Anjum Chaudhry, Section of Ophthalmology, Department of Surgery, Aga Khan University, Stadium Road, P.O Box 3500, Karachi-74800, Pakistan;
- Received July 16, 2013
- Revised November 12, 2013
- Accepted November 20, 2013
- First published December 16, 2013.
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