1 Division of Cardiology, Cotugno Hospital - AORN dei Colli, Naples, Italy.
2 Division of Cardiology, Monaldi Hospital - AORN dei Colli, Naples, Italy.
3 Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy.
4 Subintensive Care Unit and Respiratory Pathophysiology Department, Cotugno Hospital -AORN dei Colli, Naples, Italy.
5 Cardiology Department, Guglielmo Da Saliceto Hospital, Piacenza, Italy.
6 Department of Translational Medical Sciences, University of Naples "Federico II", Naples, Italy.
7 Department of Medical Translational Sciences, University of Campania "Luigi Vanvitelli", Monaldi Hospital, Naples, Italy. Electronic address: vincenzo.russo@unicampania.it.