title: Drug prevention in elementary schools: an introduction to the special issue.
authors.affiliation: Pacific Institute for Research and Evaluation, Chapel Hill, North Carolina 27514, USA. Ringwalt@pire.org
authors.forename: Chris
authors.initials: C
authors.lastname: Ringwalt
authors.forename: Michael L
authors.initials: ML
authors.lastname: Hecht
authors.forename: Suellen
authors.initials: S
authors.lastname: Hopfer
mesh_terms: D002648:Child; D015438:Health Behavior; D006266:Health Education; D006801:Humans; D012572:School Health Services / Q000458:organization & administration*; D019966:Substance-Related Disorders / Q000453:epidemiology / Q000517:prevention & control* / Q000523:psychology; D014481:United States / Q000453:epidemiology