Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (UID/ECO/03182/2019)
Text and Data Mining valid from 2019-10-01
First Online: 14 October 2019
Compliance with Ethical Standards
: 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.
: Participants in the survey were voluntary and their participation was anonymous, with tacit consent.
: The authors declare that they have no conflict of interest.