Spain authorises clinical trial on heroin maintenance therapy.
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D000284:Administration, Oral; D002986:Clinical Trials as Topic; D003932:Heroin / Q000008:administration & dosage*; D006556:Heroin Dependence / Q000453:epidemiology / Q000534:rehabilitation*; D006801:Humans; D008691:Methadone / Q000008:administration & dosage; D009294:Narcotics / Q000008:administration & dosage*; D013030:Spain / Q000453:epidemiology
D009294:Narcotics; D003932:Heroin; D008691:Methadone