Macías-Sánchez, Elena http://orcid.org/0000-0003-1569-8088
Willinger, Marc G. http://orcid.org/0000-0002-9996-7953
Pina, Carlos M. http://orcid.org/0000-0002-7748-5240
Checa, Antonio G. http://orcid.org/0000-0001-7873-7545
Article History
Received: 30 May 2017
Accepted: 18 September 2017
First Online: 5 October 2017
Competing Interests
: The authors declare that they have no competing interests.