Received: 7 January 2019
Accepted: 8 May 2019
First Online: 22 May 2019
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of the Federal University of Uberlândia (number of approval: 1823938). The informed consent was deemed unnecessary due to retrospective nature of this study.
: Not applicable.
: The authors declare that they have no competing interests.
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