- Correspondence to Professor Joaquim Neto Murta, Ophthalmology Unit, Centro Hospitalar e Universitário de Coimbra, Praceta Mota Pinto, Coimbra 3049, Portugal;
- Received July 22, 2012
- Revised February 7, 2013
- Accepted February 23, 2013
- First published March 26, 2013.
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