Received: 25 January 2018
Accepted: 5 April 2018
First Online: 23 April 2018
Ethics approval and consent to participate
: The study was approved by the Ethics Research Committee under protocol No. 1.470.285/2016. All participants signed the informed consent form designed according to the n° 466/12 on “Research involving human beings, from the Health Board of the Ministry of Health”. Consent was obtained verbally and in writing (signature or fingerprints). The consent form was translated into the Portuguese language for understanding of participants.
: The authors declare that they have no competing interests.
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