title: Current and future directions in elementary school drug prevention.
authors.affiliation: Tanglewood Research, Inc., Pennsylvania State University, University Park, PA 16802, USA. Sxh343@psu.edu
authors.forename: William B
authors.initials: WB
authors.lastname: Hansen
mesh_terms: D002648:Child; D055317:Evidence-Based Practice; D005544:Forecasting; D006801:Humans; D011322:Primary Prevention; D012572:School Health Services / Q000639:trends*; D019966:Substance-Related Disorders / Q000517:prevention & control*