1. Internal Medicine, Bentivoglio Hospital, AUSL Bologna, 40010 Bologna, Italy
2. Unit of Ultrasound in Internal Medicine, Department of Medicine and Science of Aging, G. D’Annunzio University, 66100 Chieti, Italy
3. Internal Medicine, Department of Medicine and Science of Aging, G. D’Annunzio University, 66100 Chieti, Italy
4. Unit of Radiology, “Santissima Annunziata” Hospital, 66100 Chieti, Italy
5. Department of Medicine, Surgery and Pharmacy, University of Sassari, 07100 Sassari, Italy
6. Interventional, Diagnostic and Therapeutic Ultrasound Unit, IRCCS, Azienda Ospedaliero-Universitaria di Bologna, 40010 Bologna, Italy