title: Natural history of autoimmune achlorhydric atrophic gastritis. A 1-15-year follow-up study.
mesh_terms: D000126:Achlorhydria / Q000150:complications / Q000276:immunology*; D000328:Adult; D000368:Aged; D000752:Anemia, Pernicious / Q000209:etiology; D001284:Atrophy / Q000150:complications / Q000276:immunology; D001323:Autoantibodies / Q000032:analysis; D001327:Autoimmune Diseases / Q000150:complications; D005260:Female; D005500:Follow-Up Studies; D005756:Gastritis / Q000150:complications / Q000276:immunology*; D006801:Humans; D007437:Intrinsic Factor; D008286:Malabsorption Syndromes / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D012546:Schilling Test; D013997:Time Factors; D014805:Vitamin B 12 / Q000378:metabolism
chemical_list: D001323:Autoantibodies; D007437:Intrinsic Factor; D014805:Vitamin B 12