Clinical implications of differences between real world and clinical trial usage of left ventricular assist devices for end stage heart failure. oleh Catherine Mezzacappa, Neal G Ravindra, Cesar Caraballo, Fouad Chouairi, P Elliott Miller, John-Ross D Clarke, Jadry Gruen, Makoto Mori, Megan McCullough, Clancy Mullan, Arnar Geirsson, Joseph G Rogers, Mohammad Anwer, Nihar Desai, Tariq Ahmad