[1] Univ Cattolica Sacro Cuore, Fdn Policlin Univ Agostino, Dept Internal Med & Gastroenterol, Gemelli IRCCS, I-00168 Rome, Italy
[2] Univ Cattolica Sacro Cuore, Fdn Policlin Univ Agostino Gemelli IRCCS, CEMAD Digest Dis Ctr, I-00168 Rome, Italy
[3] Univ Cattolica Sacro Cuore, Fdn Policlin Univ A Gemelli IRCCS, Internal Med & Gastroenterol Unit, I-00168 Rome, Italy