Funding for this research was provided by:
EEA Grants (000138DT1)
Fundação para a Ciência e a Tecnologia (SFRH/BPD/108126/2015)
Received: 14 July 2017
Accepted: 17 January 2018
First Online: 25 January 2018
Ethics approval and consent to participate
: This work was carried out in accordance with the recommendations by the Ethics Sub-commission of Life and Health Sciences (SECVS) from the University of Minho (SECVS 135/2015), by the Health Ethics Committee of the ARSN (Northern Region Health Administration) (68/2014) and the Ethics Committee for Health of the São João Hospital Centre (CES-305/15), with written informed consent from all subjects. All procedures were in accordance with the ethical standards of the responsible committees and with the Helsinki Declaration, as revised in 2008.
: Not applicable
: The authors declare that they have no competing interests
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