Text and Data Mining valid from 2019-07-16
Received: 12 April 2019
Revised: 6 June 2019
Accepted: 8 July 2019
First Online: 16 July 2019
Compliance with ethical standards
: The study was approved by UNICAMP’s Research Ethics Committee (registration number 38170714.9.0000.5404), and a written informed consent was obtained from the participants’ legal guardians.
: The authors declare that they have no conflict of interest.