1. I Clinica Medica, Department of Clinical Internal, Anaesthesiologic and Cardiovascular Sciences, Sapienza University of Rome, Rome, Italy
2. Department of Public Health and Infectious Diseases, Sapienza University of Rome, Rome, Italy
3. Clinica Medica, Department of Medicine and Aging, “G. D'Annunzio” University of Chieti-Pescara, Chieti, Italy
4. Department of Anesthesia and Critical Care Medicine, Sapienza University of Rome, Rome, Italy