Michaelides, AP Dilaveris, PE Psomadaki, ZD Richter, DJ and Andrikopoulos, GK Pitsilides, N Dounis, V Stefanadis, C and Toutouzas, PK, QRS prolongation on the signal-averaged electrocardiogram versus ST-segment changes on the 12-lead electrocardiogram: Which is the most sensitive electrocardiographic marker of myocardial ischemia?, Clinical Cardiology, (22), 403-408, 1999, CLINICAL CARDIOLOGY PUBL CO, 0160-9289, 1932-8738