Funding for this research was provided by:
Ministerio de Economía, Industria y Competitividad, Gobierno de España (PSI2015-70990-P)
Article History
Received: 5 January 2019
Accepted: 13 May 2019
First Online: 13 June 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in the study were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study