title: Extra-articular manifestations of rheumatoid arthritis.
mesh_terms: D001172:Arthritis, Rheumatoid / Q000150:complications*; D005128:Eye Diseases / Q000209:etiology; D006331:Heart Diseases / Q000209:etiology; D006402:Hematologic Diseases / Q000209:etiology; D006801:Humans; D009422:Nervous System Diseases / Q000209:etiology; D012218:Rheumatoid Nodule / Q000209:etiology; D014657:Vasculitis / Q000209:etiology