title: Assessment of pupil size during acute heroin withdrawal in Viet Nam.
mesh_terms: D000328:Adult; D002940:Circadian Rhythm; D003250:Constriction; D004106:Dilatation / Q000187:drug effects; D003932:Heroin / Q000008:administration & dosage / Q000494:pharmacology; D006556:Heroin Dependence / Q000503:physiopathology*; D006801:Humans; D008297:Male; D011680:Pupil / Q000187:drug effects / Q000503:physiopathology*; D012025:Reflex, Pupillary / Q000187:drug effects; D013375:Substance Withdrawal Syndrome / Q000503:physiopathology*; D014481:United States; D014744:Vietnam
chemical_list: D003932:Heroin