Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (PTDC/DES/72317/2006, 2008-2011)
Fundação para a Ciência e a Tecnologia (UID/BIM/04585/2016)
Received: 9 August 2018
Accepted: 6 January 2019
First Online: 11 January 2019
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the Faculty Ethics Committee and with the 1964 Helsinki declaration and its later amendments. Informed consent was obtained from all individual participants gave written informed consent before any assessment.
: Not applicable.
: The authors declare that they have no competing interests.
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