1. Clinical Nutrition Unit, A.O.R.N. “San Giuseppe Moscati”, Contrada Amoretta, Avellino, Italy;
2. Ultrasonography Unit, A.O.R.N. “San Giuseppe Moscati”, Contrada Amoretta, Avellino, Italy;
3. Nutrition and Dietetics Service, Fondazione IRCCS Policlinico San Matteo, Viale Golgi, Pavia, Italy