Rodríguez-Mateo, Cristina
Torres, Belén
Gutiérrez, Gabriel
Pintor-Toro, José A
Article History
Received: 16 June 2016
Revised: 16 December 2016
Accepted: 11 January 2017
First Online: 10 February 2017
Competing interests
: The authors declare no conflict of interest.