Gracia-Lázaro, Carlos http://orcid.org/0000-0002-9769-8796
Hernández, Laura http://orcid.org/0000-0002-3159-0053
Borge-Holthoefer, Javier http://orcid.org/0000-0001-9036-8463
Moreno, Yamir http://orcid.org/0000-0002-0895-1893
Article History
Received: 26 March 2018
Accepted: 1 June 2018
First Online: 18 June 2018
Competing Interests
: The authors declare no competing interests.