Splinter subgroups of pernicious anemia.
D000328:Adult; D000361:Agammaglobulinemia / Q000150:complications* / Q000209:etiology; D000752:Anemia, Pernicious / Q000150:complications* / Q000209:etiology; D001327:Autoimmune Diseases; D006801:Humans; D008875:Middle Aged