Residual platelet reactivity after clopidogrel loading in patients with ST-elevation myocardial infarction undergoing an unexpectedly delayed primary percutaneous coronary intervention: impact on intracoronary thrombus burden and myocardial perfusion - Vavuranakis, M.; Vrachatis, D.A.; Papaioannou, T.G.; Archontakis, S.; Kalogeras, K.I.; Kariori, M.G.; Gafou, A.; Moldovan, C.; Tzamalis, P.; Stefanadis, C. (Circulation Journal, 2011)