title: Association between pernicious anemia and rheumatoid arthritis; a serological study.
mesh_terms: D000368:Aged; D000752:Anemia, Pernicious / Q000150:complications* / Q000276:immunology; D001172:Arthritis, Rheumatoid / Q000150:complications* / Q000276:immunology; D005260:Female; D006801:Humans; D007841:Latex Fixation Tests; D008297:Male; D008875:Middle Aged; D012217:Rheumatoid Factor / Q000032:analysis
chemical_list: D012217:Rheumatoid Factor