Abnormal Q waves and normal coronary arteriograms in primary myocardial disease.
D009202:Cardiomyopathies / Q000175:diagnosis*; D017023:Coronary Angiography; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000175:diagnosis