Text and Data Mining valid from 2018-05-05
Received: 6 March 2018
Accepted: 24 April 2018
First Online: 5 May 2018
Compliance with ethical standards
: The authors do not have any particular conflict of interest. Author ACBL received a post-doctoral scholarship from the São Paulo Research Foundation (Fundação de Amparo à Pesquisa—FAPESP).
: This research received ethical approval from the School of Public Health, University of São Paulo (FSP-USP) ethics committee under the protocol number 01658112.6.0000.5421.
: The parents/caregivers of the girls and the school principals provided written informed consent, as well as the girls provided assent forms for participation prior to data collection.