[1] Univ Cattolica Sacro Cuore, Dept Internal Med Gastroenterol & Hepatol, Rome, Italy
[2] IRCCS Casa Sollievo Sofferenza, Dept Med Sci, San Giovanni Rotondo, Italy
[3] Univ Cattolica Sacro Cuore, Inst Nucl Med, Rome, Italy
[4] Univ Cattolica Sacro Cuore, Dept Surg, Transplantat Serv, Rome, Italy