Prognostic Role of Myocardial Performance Index on Long-Term Survival after Heart Transplantation: A Prospective Study. - Frea, Simone; Capriolo, Michele; Bergamasco, Laura; Iacovino, Cristina; Quaglia, Francesca Calì; Ribezzo, Marco; Marra, Walter Grosso; Boffini, Massimo; Rinaldi, Mauro; Morello, Mara; Gaita, Fiorenzo (Echocardiography, 2013)