Text and Data Mining valid from 2020-01-31
Received: 10 July 2019
Accepted: 22 January 2020
First Online: 31 January 2020
Ethics approval and consent to participate
: The Ethics Committee of the Institute of Social Medicine (State University of Rio de Janeiro, Brazil) approved the protocol (CAAE: 10471313.2.0000.5260). Written informed consent was obtained from all the participants’ parents. Students with physical or mental disabilities and girls who were pregnant or lactating were considered ineligible and were not included in the study.
: Not applicable.
: The authors declare that they have no competing interests.