title: [An essential paper].
authors.affiliation: Núcleo de Psiquiatria, Universidade Federal de Santa Catarina. mzaleski@terra.com.br
authors.forename: Marcos
authors.initials: M
authors.lastname: Zaleski
mesh_terms: D001938:Brazil; D006801:Humans; D013287:Illicit Drugs / Q000331:legislation & jurisprudence*; D019966:Substance-Related Disorders
chemical_list: D013287:Illicit Drugs