title: Vitamin B12 deficiency--A 21st century perspective.
authors.affiliation: University of Texas MD Anderson Cancer Center Houston, TX, USA.
authors.forename: Thein H
authors.initials: TH
authors.lastname: Oo
mesh_terms: D006801:Humans; D014806:Vitamin B 12 Deficiency / Q000175:diagnosis* / Q000628:therapy*