Fachal, Laura
Gómez-Caamaño, Antonio
Álvarez Iglesias, Vanesa
Gómez Carballa, Alberto
Calvo, Patricia
Salas, Antonio
Vega, Ana
Article History
Received: 17 February 2014
Revised: 2 May 2014
Accepted: 8 May 2014
First Online: 5 June 2014
Competing interests
: The authors declare no conflict of interest.