title: Plasma testosterone levels during chronic heroin use and protracted abstinence: study of Hong Kong addicts.
mesh_terms: D000293:Adolescent; D000328:Adult; D006556:Heroin Dependence / Q000097:blood* / Q000534:rehabilitation; D006723:Hong Kong; D006801:Humans; D008297:Male; D008691:Methadone / Q000627:therapeutic use; D013739:Testosterone / Q000097:blood*
chemical_list: D013739:Testosterone; D008691:Methadone