INTESTINAL MALABSORPTION OF VITAMIN B 12 IN PERNICIOUS ANEMIA.
D000368:Aged; D000740:Anemia; D000752:Anemia, Pernicious; D004358:Drug Therapy; D005853:Geriatrics; D006801:Humans; D007437:Intrinsic Factor; D014805:Vitamin B 12
D007437:Intrinsic Factor; D014805:Vitamin B 12
ANEMIA, PERNICIOUS; DRUG THERAPY; GERIATRICS; INTRINSIC FACTOR