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Article History

Received: 4 December 2017

Accepted: 25 June 2018

First Online: 3 July 2018

Ethics approval and consent to participate

: Participants in this study were volunteers and gave written informed consent before entering the study. UNIFESP/EPM’s Ethics and Research Committee approved the present study (reference number 464.939).

: Not applicable.

: The authors declare that they have no competing interests.

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