Received: 25 March 2019
Accepted: 7 August 2019
First Online: 13 August 2019
Ethics approval and consent to participate
: All participants had given informed consent, and the study design was approved by the Ethical Review Board of the University for Health Science of Alagoas, Maceió, Brazil and complied with the Declaration of Helsinki.
: Not applicable
: The authors declare that they have no competing interests.