Text and Data Mining valid from 2018-10-12
Received: 28 February 2018
Accepted: 20 September 2018
First Online: 12 October 2018
Ethics approval and consent to participate
: The study was submitted and approved by the ethics committee of Federal University of Pernambuco for the publication of this work. The informed consent was not obtained from all participants because it was waived by the ethics committee of Federal University of Pernambuco. Furthermore, the data was also de-identified. A copy of the written consent by ethics committee of Federal University of Pernambuco is available for review by the editor-in-chief of this journal. The authors declare that the procedures followed the regulations established by the local ethics committee of Federal University of Pernambuco and the helsinki declaration of the world medical association. Federal University of Pernambuco gave access to confidential patient medical records to the authors and these records were anonymous.
: Not applicable.
: The authors declared no potential competing interest with respect to the research, authorship, and/or publication of this article.
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