1. Internal Medicine, Bentivoglio Hospital, AUSL Bologna, 40010 Bentivoglio, Italy
2. Department of Medicine and Aging Science, Institute of “Clinica Medica”, “G. d’Annunzio” University of Chieti, 66100 Chieti, Italy
3. Internistic Ultrasound Unit, SS Annunziata Hospital, “G. D’Annunzio” University, 66100 Chieti, Italy