title: Reversible neurological deficits in patients with normal serum vitamin B12 levels.
mesh_terms: D005260:Female; D006801:Humans; D008875:Middle Aged; D009422:Nervous System Diseases / Q000097:blood*; D014805:Vitamin B 12 / Q000097:blood*; D014806:Vitamin B 12 Deficiency / Q000097:blood*
chemical_list: D014805:Vitamin B 12