title: Editors' introduction: policy change and policy analysis.
authors: Henri
authors: H
authors: Bergeron
authors: Peter
authors: P
authors: Reuter
mesh_terms: D003415:Crime / Q000331:legislation & jurisprudence / Q000517:prevention & control; D004335:Drug and Narcotic Control; D033161:Government Regulation; D006291:Health Policy; D006801:Humans; D007391:International Cooperation; D011634:Public Health / Q000331:legislation & jurisprudence*; D015813:Substance Abuse Detection / Q000331:legislation & jurisprudence; D019966:Substance-Related Disorders / Q000517:prevention & control*