title: Experimental human drug self-administration: methodology and application to the study of sedative abuse.
mesh_terms: D000328:Adult; D001519:Behavior; D003975:Diazepam / Q000494:pharmacology*; D004777:Environment; D006801:Humans; D008297:Male; D010424:Pentobarbital / Q000494:pharmacology*; D019966:Substance-Related Disorders; D014040:Token Economy
chemical_list: D010424:Pentobarbital; D003975:Diazepam