1 Department of Clinical Internal, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, Viale del Policlinico, 155, 00161 Rome, Italy. Electronic address: lorenzo.loffredo@uniroma1.it.
2 Department of Clinical Internal, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, Viale del Policlinico, 155, 00161 Rome, Italy.
3 Department of Public Health, Sapienza University, Rome, Italy.
4 Mediterranea Cardiocentro, Naples, Italy; Sapienza University of Rome, Rome, Italy. Electronic address: francesco.violi@uniroma1.it.