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Article History

Received: 15 March 2018

Accepted: 19 April 2018

First Online: 19 June 2018

Ethics approval and consent to participate

: Written informed consent was obtained from all participants. This study was reviewed and approved by the local Medical Ethics Committee of Universidade Federal de São Paulo.

: All authors signed a consent for publication.

: The authors declare that they have no competing interests.

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