del Puerto-Nevado, L
Rojo, F
Zazo, S
Caramés, C
Rubio, G
Vega, R
Chamizo, C
Casado, V
Martínez-Useros, J
Rincón, R
Rodríguez-Remírez, M
Borrero-Palacios, A
Cristóbal, I
Madoz-Gúrpide, J
Aguilera, O
García-Foncillas, J
Article History
Revised: 27 February 2014
Accepted: 4 April 2014
First Online: 1 May 2014
Competing interests
: The authors declare no conflict of interest.