Text and Data Mining valid from 2020-04-10
Received: 10 April 2018
Accepted: 20 March 2020
First Online: 10 April 2020
Ethics approval and consent to participate
: The study was approved by the Research Ethics Committee of the Federal University of Sergipe (Protocol Reference: 2345092). The data used are in the public domain and do not contain personally identifiable information. For this reason, individual consent was not needed.
: Not applicable.
: The authors declare that they have no competing interests.