Coronary Collateral Circulation: A New Predictor of Mortality in Heart Transplant Recipients With Allograft Vasculopathy oleh Giovanni Civieri, MD, Giulia Masiero, MD, Elena Osto, MD, PhD, Antonio Gambino, MD, Annalisa Angelini, MD, Angela Fraiese, MD, Marny Fedrigo, MD, Giuseppe Toscano, MD, Tomaso Bottio, MD, Martina Perazzolo Marra, MD, Sabino Iliceto, MD, Gino Gerosa, MD, Francesco Tona, MD, PhD