title: Cognitive impairment in older Americans in the age of folic acid fortification.
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Berry
authors.forename: Heather K
authors.initials: HK
authors.lastname: Carter
authors.forename: Quanhe
authors.initials: Q
authors.lastname: Yang
mesh_terms: D000368:Aged; D003072:Cognition Disorders / Q000517:prevention & control*; D005492:Folic Acid / Q000008:administration & dosage* / Q000097:blood; D005527:Food, Fortified; D006801:Humans; D008875:Middle Aged; D014805:Vitamin B 12 / Q000097:blood
chemical_list: D005492:Folic Acid; D014805:Vitamin B 12