title: Usefulness of AFD concept: limitations to overcome.
authors.affiliation: Hospital de Clínicas de Porto Alegre-Addiction Unit, Porto Alegre, Rio Grande do Sul, Brazil.
authors.forename: Lisia
authors.initials: L
authors.lastname: von Diemen
authors.affiliation: Federal University of Rio Grande do Sul-Department of Psychiatry, Porto Alegre, Brazil.
authors.forename: Felix Henrique Paim
authors.initials: FH
authors.lastname: Kessler
mesh_terms: D000367:Age Factors; D000428:Alcohol Drinking; D006801:Humans; D019966:Substance-Related Disorders
keywords: Adolescence; age at first drink; age of initiation; alcohol use disorders; epidemiology; prevention; substance abuse