title: Are U.S. lower normal B12 limits too low?
authors.forename: M
authors.initials: M
authors.lastname: Goodman
authors.forename: X H
authors.initials: XH
authors.lastname: Chen
authors.forename: D
authors.initials: D
authors.lastname: Darwish
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003704:Dementia / Q000188:drug therapy / Q000209:etiology*; D006801:Humans; D008297:Male; D012016:Reference Values; D014481:United States; D014805:Vitamin B 12 / Q000627:therapeutic use; D014806:Vitamin B 12 Deficiency / Q000150:complications*
chemical_list: D014805:Vitamin B 12