- Correspondence to Dr David Araújo-Vilar, Department of Medicine-IDIS, CIMUS-Facultade de Medicina, University of Santiago de Compostela, Avda de Barcelona s/n, Santiago de Compostela 15707, Spain;
- Received January 9, 2013
- Revised March 10, 2013
- Accepted March 11, 2013
- First published April 6, 2013.
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