Clinical electrocardiography . Fig. 172.—Patient had had angina pectoris for four years. Died in anginal attacktwenty-one months after examination. ELECTROCARDIOGRAPHIC STUDY OF HEART DISEASE 177 Fig. 173.—Patient had had angina pectoris for five years. Died of heart diseasetwo years after Fig. 174.—Patient had had angina pectoris one and one-half years. Died of heartdisease two years after examination. 178 CLINICAL ELECTROCARDIOGRAPHY

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Keywords: ., bookcentury1900, bookdecade1920, bookidclinicalelec, bookyear1922