Márquez-Ruiz, Javier
Ammann, Claudia
Leal-Campanario, Rocío
Ruffini, Giulio
Gruart, Agnès
Delgado-García, José M.
Article History
Received: 15 September 2015
Accepted: 16 December 2015
First Online: 21 January 2016
Competing interests
: The authors declare no competing financial interests.