Funding for this research was provided by:
Secretaría de Estado de Investigación, Desarrollo e Innovación (EDU2011-27840, EDU2010-21995-C02-02)
Article History
First Online: 29 October 2018
Compliance with Ethical Standards
:
: All authors Sílvia Cavalcante, Cintia Rodríguez and Eduardo Martí declare that they have no conflict of interest.
: All procedures performed in studies involving human participants 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.