Horna, Gertrudis http://orcid.org/0000-0001-8974-7044
López, María
Guerra, Humberto http://orcid.org/0000-0002-2617-053X
Saénz, Yolanda http://orcid.org/0000-0002-2457-4258
Ruiz, Joaquim http://orcid.org/0000-0002-4431-2036
Article History
Received: 1 May 2018
Accepted: 24 October 2018
First Online: 7 November 2018
Competing Interests
: The authors declare no competing interests.