Pernicious anemia; a problem in diagnosis.
D000740:Anemia; D000752:Anemia, Pernicious / Q000175:diagnosis*; D045728:Corrinoids; D006397:Hematinics; D006801:Humans; D064028:Tracheophyta; D014805:Vitamin B 12
D045728:Corrinoids; D006397:Hematinics; D014805:Vitamin B 12
ANEMIA, PERNICIOUS/diagnosis; VITAMIN B12