1. From the Department of Diagnostic and Therapeutic Services (S.C.), and Department for the Treatment and Study of Cardiothoracic Diseases and Cardiothoracic Transplantation, Cardiology Unit (G.R.), Mediterranean Institute for Transplantation and Advanced Specialized Therapies (IRCCS-ISMETT), Via Ernesto Tricomi 5, 90127 Palermo, Italy; and Department of Radiology, Mater Dei Hospital, Msida, Malta (C.C.).