- Correspondence to Dr Pedro Arriola-Villalobos, Servicio de Oftalmología, Hospital Clínico San Carlos, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), C/ Pez Volador 32, 9°D, 28007, Madrid, Spain;
- Received November 26, 2014
- Revised January 19, 2015
- Accepted January 27, 2015
- First published February 12, 2015.
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