Delgado-López, P. D.
Corrales-García, E. M.
Martino, J.
Lastra-Aras, E.
Dueñas-Polo, M. T.
Article History
Received: 26 December 2016
Accepted: 14 February 2017
First Online: 2 March 2017
Compliance with ethical standards
:
: The authors report no conflict of interest regarding this manuscript.
: Not needed for a literature review. No humans or animals participated in this study.