Otero-Ortega, Laura
Gómez-de Frutos, Mari Carmen
Laso-García, Fernando
Sánchez-Gonzalo, Alba
Martínez-Arroyo, Arturo
Díez-Tejedor, Exuperio
Gutiérrez-Fernández, María
Article History
Received: 10 May 2017
Accepted: 27 July 2017
First Online: 25 August 2017
Competing Interests
: The authors declare that they have no competing interests.