Funding for this research was provided by:
Received: 7 January 2018
Accepted: 28 February 2019
First Online: 11 March 2019
Ethics approval and consent to participate
: Verbal consent was obtained from those responsible for the children in the initial phases of the study (1982–1986), as was the common practice at that time, when there was no ethics committee at the Federal University of Pelotas. In the next phases, the Medical Ethics Committee of the Federal University of Pelotas approved the study protocol and all follow-ups of the Pelotas 1982 Birth Cohort Study. Participants signed a consent form on behalf of them at each follow-up, after being informed of the study objectives.
: Not applicable.
: The authors declare that they have no competing interests.
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