Combining ethnographic and epidemiologic methods in targeted AIDS interventions: the Chicago model.
D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control*; D002641:Chicago; D006266:Health Education; D006801:Humans; D007275:Injections, Intravenous; D009339:Needles; D012307:Risk Factors; D019966:Substance-Related Disorders / Q000150:complications*