ANXA5 and ST Elevation Myocardial Infarction: Extracellular vesicle (EV) concentration and percentage [%] of Annexin V+ EV in patients with ST-elevation myocardial infarction (STEMI) with either normal-lightly (≥40 %) or moderately-severely (<40 %) reduced left ventricular ejection fraction (LVEF).