title: Cases from the Osler Medical Service at Johns Hopkins University. B(12) deficiency.
authors.forename: Shannon
authors.initials: S
authors.lastname: Putnam
mesh_terms: D000752:Anemia, Pernicious / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D008875:Middle Aged; D014806:Vitamin B 12 Deficiency / Q000097:blood* / Q000175:diagnosis