27. Back MR, Schmacht DC, Bowser AN, Stordahl N, Cuthbertson D, Johnson BL, et al. Critical appraisal of cardiac risk stratification before elective vascular surgery.
28. Back MR, Schmacht DC, Bowser AN, Stordahl N, Cuthbertson D, Johnson BL, et al. Critical appraisal of cardiac risk stratification before elective vascular surgery.