TY - JOUR KW - Adult KW - Aged KW - Analgesics, Opioid/therapeutic use KW - Buprenorphine/therapeutic use KW - Cocaine-Related Disorders/epidemiology KW - Comorbidity KW - Female KW - Heroin Dependence/epidemiology/therapy KW - Humans KW - London/epidemiology KW - Male KW - Methadone/therapeutic use KW - Middle Aged KW - Narcotic Antagonists/therapeutic use KW - Opiate Substitution Treatment/methods KW - Retrospective Studies KW - Treatment Outcome KW - Young Adult KW - Abstinence KW - Crack KW - Dual use KW - Heroin KW - Opiate substitution therapy KW - Predictors AU - F. Heidebrecht AU - M. B. MacLeod AU - L. Dawkins A1 - AD - London South Bank University, London, UK. Electronic address: felicia.heidebrecht@gmx.de.; Walthamstow Drug Services, London, UK.; London South Bank University, London, UK. BT - Addictive Behaviors C5 - Opioids & Substance Use CY - England JF - Addictive Behaviors M1 - Journal Article PB - Elsevier Ltd PP - England PY - 2018 SN - 1873-6327; 0306-4603 SP - 210 EP - 216 EP - T1 - Predictors of heroin abstinence in opiate substitution therapy in heroin-only users and dual users of heroin and crack T2 - Addictive Behaviors TI - Predictors of heroin abstinence in opiate substitution therapy in heroin-only users and dual users of heroin and crack U1 - Opioids & Substance Use U2 - 29065377 VL - 77 VO - 1873-6327; 0306-4603 Y1 - 2018 Y2 - Feb ER -