1. From the Department of Clinical Internal, Anesthesiologic and Cardiovascular Sciences, Sapienza University of Rome, Italy (F.V., D.P., P.P.)
2. Mediterranea Cardiocentro, Napoli, Italy (F.V., P.P., R.C.)
3. Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Italy (R.C.).