Affiliation: | 1. Post-Graduate Program in Psychiatry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil 2. Post-Graduate Program in Epidemiology, UFPEL, Federal University of Pelotas, Mal Deodoro, 1160, Pelotas, RS, CEP 96020-220, Brazil 3. Child and Adolescent Psychiatric Division, Federal University of S?o Paulo, S?o Paulo, Brazil 4. Child and Adolescent Psychiatric Division, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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