Calvo-Sanz, Jorge A. http://orcid.org/0000-0002-8276-1369
Portero-Benito, Alejandro
Arias-Puente, Alfonso
Article History
Received: 2 July 2017
Revised: 5 January 2018
Accepted: 12 January 2018
First Online: 1 February 2018
Compliance with ethical standards
:
: All authors certify that they have no affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge, or beliefs) in the subject matter or materials discussed in this manuscript.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee (INCIVI – Madrid Spain) 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.