Received: 18 January 2019
Accepted: 25 May 2019
First Online: 3 September 2019
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of the Federal University of Sao Paulo under the number 71643617.0.0000.5505 and adhered to the tenets of the Declaration of Helsinki.
: The Subjects have given their written informed consent.
: The authors declare that they have no competing interests.