1 Department of Translational Medical Sciences, Federico II University, Via S Pansini 5, Naples 80131, Italy. Electronic address: antonio.cittadini@unina.it.
2 Division of Cardiology, Cardarelli Hospital, Via A. Cardarelli, 9, Naples 80131, Italy. Electronic address: ebossone@hotmail.com.
3 Cardiomyopathy and Heart Transplantation, Department of Cardiovascular Diseases, John Ochsner Heart and Vascular Institute Ochsner Clinical School, University of Queensland School of Medicine, 1514 Jefferson Highway, New Orleans, LA 70121, USA. Electronic address: hventura@ochsner.org.