Funding for this research was provided by:
Ministerio de Economía y Competitividad (SAF2015-67770-R)
Fondo de Investigación sanitaria (PI17/01411)
Article History
Received: 29 May 2019
Accepted: 27 November 2019
First Online: 10 December 2019
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interest.