[Studies on extra-articular manifestations of rheumatoid arthritis. II. Cardiac involvement--echocardiographic study (author's transl)].
D001172:Arthritis, Rheumatoid / Q000150:complications*; D004452:Echocardiography; D006801:Humans; D010490:Pericardial Effusion / Q000209:etiology / Q000503:physiopathology*