1. Department of GeneticsUniversidade Federal do Rio Grande do SulBrazil
2. Department of PsychiatryUniversidade de São PauloBrazil
3. Institute for Developmental Psychiatry for Children and Adolescents
4. Division of Child and Adolescent PsychiatryHospital de Clínicas de Porto AlegreBrazil
5. Postgraduate Program in EpidemiologyUniversidade Federal de PelotasBrazil
6. Adult ADHD Outpatient ProgramHospital de Clínicas de Porto AlegreBrazil