Received: 11 August 2018
Accepted: 29 January 2019
First Online: 15 February 2019
Ethics approval and consent to participate
: Approved by the Institutional Review Board of the Federal University of São Paulo and adhered to the tenets of the Declaration of Helsinki. Written informed consent was obtained from all patients prior to enrollment and examination.
: Not applicable.
: The authors declare that they have no competing interests.
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