title: VA study of twins may be canceled.
mesh_terms: D015085:2,4,5-Trichlorophenoxyacetic Acid / Q000009:adverse effects; D015084:2,4-Dichlorophenoxyacetic Acid / Q000009:adverse effects; D000075182:Agent Orange; D003130:Combat Disorders / Q000523:psychology; D005260:Female; D006801:Humans; D000072317:Polychlorinated Dibenzodioxins / Q000009:adverse effects; D011247:Pregnancy; D014427:Twins / Q000523:psychology; D014481:United States; D014493:United States Department of Veterans Affairs; D014728:Veterans; D014744:Vietnam
chemical_list: D000072317:Polychlorinated Dibenzodioxins; D015084:2,4-Dichlorophenoxyacetic Acid; D000075182:Agent Orange; D015085:2,4,5-Trichlorophenoxyacetic Acid