B12 DEFICIENCY ANEMIA AFTER  TOTAL GASTRECTOMY.
D000748:Anemia, Macrocytic; D000752:Anemia, Pernicious; D005743:Gastrectomy; D006410:Hematopoiesis; D006801:Humans; D014806:Vitamin B 12 Deficiency
ANEMIA, MACROCYTIC; ANEMIA, PERNICIOUS; GASTRECTOMY; HEMATOPOIESIS; VITAMIN B 12 DEFICIENCY