1 Division of Cardiology, A.O.R.N. "Sant'Anna e San Sebastiano", Caserta, Italy; Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy. Electronic address: paolo.calabro@unicampania.it.
2 Division of Cardiology, A.O.R.N. "Sant'Anna e San Sebastiano", Caserta, Italy; Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy.