title: [Clinicopathological features of 51 patients with megaloblastic anemia caused by vitamin B12 deficiency].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000748:Anemia, Macrocytic / Q000209:etiology*; D000749:Anemia, Megaloblastic / Q000209:etiology* / Q000473:pathology; D005260:Female; D005743:Gastrectomy; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology; D014806:Vitamin B 12 Deficiency / Q000150:complications*