Text and Data Mining valid from 2019-07-22
Received: 18 December 2018
Accepted: 11 July 2019
First Online: 22 July 2019
Ethics approval and consent to participate
: The local ethics committee (Comitê de Ética em Pesquisa da Pontifícia Universidade Católica do Paraná) approved this study (committee’s reference number = 74844017800000020). No administrative permissions were required to access the raw data. The requirement of informed consent was waived by the institutional review board.
: Not applicable.
: The authors declare that they have no competing interests.