title: Reliability of serum B12 levels in the diagnosis of B12 deficiency.
authors.forename: G D
authors.initials: GD
authors.lastname: Spoelhof
mesh_terms: D006801:Humans; D015203:Reproducibility of Results; D014805:Vitamin B 12 / Q000097:blood*; D014806:Vitamin B 12 Deficiency / Q000097:blood*
chemical_list: D014805:Vitamin B 12