title: Epidemiologic research on Vietnam veterans. Difficulties and lessons learned.
authors.forename: S H
authors.initials: SH
authors.lastname: Zahm
mesh_terms: D015085:2,4,5-Trichlorophenoxyacetic Acid / Q000009:adverse effects; D015084:2,4-Dichlorophenoxyacetic Acid / Q000009:adverse effects; D000075182:Agent Orange; D015331:Cohort Studies; D003678:Defoliants, Chemical / Q000009:adverse effects; D005260:Female; D006689:Hodgkin Disease / Q000453:epidemiology; D006801:Humans; D008297:Male; D008877:Middle East; D009026:Mortality; D016273:Occupational Exposure; D000072317:Polychlorinated Dibenzodioxins / Q000009:adverse effects; D012042:Registries; D014481:United States / Q000453:epidemiology; D014728:Veterans / Q000706:statistics & numerical data*; D014744:Vietnam
chemical_list: D003678:Defoliants, Chemical; D000072317:Polychlorinated Dibenzodioxins; D015084:2,4-Dichlorophenoxyacetic Acid; D000075182:Agent Orange; D015085:2,4,5-Trichlorophenoxyacetic Acid