Increased number of circulating progenitor cells after implantation of ventricular assist devices - Manginas, Athanassios; Tsiavou, Anastasia; Sfyrakis, Petros; Giamouzis, Gregory; Tsourelis, Loukas; Leontiadis, Evangelos; Degiannis, Dimitrios; Cokkinos, Dennis V; Alivizatos, Petros A (The Journal of Heart and Lung Transplantation, 2009)