Werneck, André O.
Conde, Jorge
Coelho-e-Silva, Manuel J.
Pereira, Artur
Costa, Daniela C.
Martinho, Diogo
Duarte, João P.
Valente-dos-Santos, João http://orcid.org/0000-0003-0980-0269
Fernandes, Rômulo A.
Batista, Mariana B.
Ohara, David
Cyrino, Edilson S.
Ronque, Enio R. V.
Funding for this research was provided by:
Portuguese Foundation for Science and Technology (uid/dtp/04213/2019, SFRH/BD/101083/2014, SFRF/BD/136193/2018)
Portuguese Foundation for Science and Technology (SFRH/BD/121441/2016, SFRH/BPD/100470/2014)
National Council of Technological and Scientific Development (CNPq/Brazil)
Foundation for the Support of Scientific and Technological Development of Paraná (FAADCT/Brazil)
Article History
Received: 20 October 2018
Accepted: 19 March 2019
First Online: 8 April 2019
Ethics approval and consent to participate
: The current project was approved by the Research Ethics Committee for studies involving human participants of the State University of Londrina and University Medical Center of Northern Parana (CEP/UEL/202–07) and subsequently presented by the research leader to school boards and teachers. After obtaining institutional approval, signed informed consent containing the objectives, protocols, and risks was obtained from parents or legal guardians and each participant. During the first visit the adolescents were informed that their participation was voluntary and that they could discontinue at any time. Procedures were conducted in accordance with the Declaration of Helsinki for human studies of the World Medical Association.
: Not applicable.
: João Valente-dos-Santos is an editorial board member of BMC Pediatrics. The rest of the authors declare that they have no competing interest.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.