title: Subnormal serum vitamin B12 concentration.
authors.forename: O M
authors.initials: OM
authors.lastname: Jolobe
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D018798:Anemia, Iron-Deficiency / Q000097:blood* / Q000150:complications*; D015982:Bias; D004909:Erythrocyte Indices; D006801:Humans; D008297:Male; D015203:Reproducibility of Results; D014806:Vitamin B 12 Deficiency / Q000097:blood* / Q000150:complications*