J Clin Psychopharmacol 2014 Apr;34(2):212-7
From the *ADHD Outpatient Clinic, Hospital de Clínicas de Porto Alegre, and †Department of Genetics, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Rio Grande do Sul; ‡Postgraduate Program in Biotechnology, Centro Universitário UNIVATES, Lajeado; §Department of Psychiatry, Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Rio Grande do Sul; and ||National Institute of Development Psychiatry for Children and Adolescents, São Paulo, Brazil.