title: Re: "Neighborhood poverty and injection cessation in a sample of injection drug users".
authors.forename: Igor
authors.initials: I
authors.lastname: Karp
mesh_terms: D015986:Confounding Factors, Epidemiologic; D055030:Drug Users / Q000706:statistics & numerical data*; D006801:Humans; D008396:Maryland / Q000453:epidemiology; D011204:Poverty Areas; D012111:Residence Characteristics; D012307:Risk Factors; D015819:Substance Abuse, Intravenous / Q000453:epidemiology* / Q000517:prevention & control*