[1] Univ Fed Pelotas, Postgrad Program Epidemiol, Marechal Deodoro St 1160,2nd Floor, BR-96020220 Pelotas, RS, Brazil
[2] Univ Fed Rio Grande do Sul, Dept Psychiat, Porto Alegre, RS, Brazil
[3] Hosp Clin Porto Alegre, Porto Alegre, RS, Brazil
[4] CNPq, Natl Inst Dev Psychiat Children & Adolescents, Brasilia, DF, Brazil
[5] Pontificia Univ Catolica Rio Grande do Sul, Postgrad Program Pediat Child Hlth, Porto Alegre, RS, Brazil
[6] Univ Sao Paulo, Fac Med FMUSP, Dept Med Prevent, Sao Paulo, Brazil