title: On the etiology of narcotic addiction and its relation to curiosity.
mesh_terms: D000328:Adult; D000987:Antisocial Personality Disorder / Q000175:diagnosis; D005106:Exploratory Behavior; D006801:Humans; D008297:Male; D008875:Middle Aged; D009294:Narcotics; D011581:Psychological Tests; D019966:Substance-Related Disorders / Q000175:diagnosis / Q000209:etiology*
chemical_list: D009294:Narcotics