1 IRCCS Istituto Auxologico Italiano, Cardiomyopathy Unit and Center for the Cardiac Arrhythmias of Genetic Origin, Department of Cardiovascular, Neural and Metabolic Sciences, Piazzale Brescia, 20, Milan 20149, Italy.
2 Advanced Heart Failure and Heart Transplantation Unit, Department of Cardiology, Centro Hospitalar Lisboa Ocidental, Avenida Prof Dr Reinaldo dos Santos 2790-134 Carnaxide, Lisbon, Portugal.
3 Department of Cardiology, Leiden University Medical Center, Albinusdreef 2 2300 RC Leiden, The Netherlands.