Funding for this research was provided by:
Fundação para a Ciência e a Tecnologia (SFRH/BD/98915/2013, UID/EMS/50022/2013)
Received: 12 May 2020
Accepted: 30 October 2020
First Online: 14 November 2020
Ethics approval and consent to participate
: The procedures used in this study complied with the Declaration of Helsinki 1975, as revised in 2013. After the study protocol was explained to prospective participants, written informed consent was obtained according to the ethical guidelines of the hospital. The study was carried out with the approval of the ethics committee of Centro Hospitalar do Porto (2017-068) and was registered with 062-DEFI/062-CES.
: Not applicable.
: The authors report no conflicts.