1 Cardiology Unit, Madre Giuseppina Vannini Hospital, Rome, Italy; Department of Clinical Internal, Anesthesiological and Cardiovascular Sciences, Sapienza University, Rome, Italy. Electronic address: luca.arcari@uniroma1.it.
2 Department of Clinical and Molecular Medicine, Sapienza University of Rome, Rome, Italy.
3 Cardiology Unit, Madre Giuseppina Vannini Hospital, Rome, Italy.