title: Target populations and interventions in prevention research: what is high risk?
authors: Department of Preventive Medicine, University of Southern California, Alhambra, CA 91803-1358, USA.
authors: M A
authors: MA
authors: Pentz
mesh_terms: D006801:Humans; D011159:Population Surveillance; D011336:Probability; D015203:Reproducibility of Results; D012107:Research Design / Q000592:standards*; D012307:Risk Factors; D019966:Substance-Related Disorders / Q000517:prevention & control*