- Correspondence to Dr Pawel Krasnicki, Department of Ophthalmology, University Teaching Hospital, M. Sklodowskiej-Curie 24 A, Bialystok 15-276, Poland;
- Received August 25, 2013
- Revised December 9, 2013
- Accepted January 3, 2014
- First published January 23, 2014.
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