to determine the importance of usual risk factors of coronary artery disease ( cad ) in patients with coronary artery spasm , 40 patients with vasospastic angina ( va ) , normal or nearly normal coronary arteries and without previous myocardial infarction were compared with 2 control groups of 40 patients each , matched for age and sex : 1 group with cad and 1 without heart disease .
C0027051
myocardial infarction
C0018799
heart disease