title: Rheumatoid arthritis: some personal considerations on aetiology and treatment. Part 1.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000209:etiology* / Q000266:history / Q000628:therapy; D006680:HLA Antigens / Q000235:genetics; D049668:History, 15th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049691:History, Medieval; D006801:Humans; D008171:Lung Diseases / Q000209:etiology; D012217:Rheumatoid Factor / Q000276:immunology; D012218:Rheumatoid Nodule / Q000473:pathology; D012859:Sjogren's Syndrome / Q000209:etiology
chemical_list: D006680:HLA Antigens; D012217:Rheumatoid Factor