Article History
Received: 18 April 2018
Accepted: 25 September 2018
First Online: 13 October 2018
Compliance with Ethical Standards
:
: Helena Gonçalves, Rui Moreira, Ana Rodrigues and Cristina Santos declares that he/she has 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.