[1] Univ Modena & Reggio Emilia, Modena HIV Metab Clin, Modena, Italy
[2] Univ Modena & Reggio Emilia, Clin & Expt Med PhD Program, Modena, Italy
[3] Univ Modena & Reggio Emilia, Modena, Italy
[4] Univ Modena & Reggio Emilia, Dept Gastroenterol, Modena, Italy
[5] Univ Modena & Reggio Emilia, Radiol Unit, Modena, Italy
[6] McGill Univ Hlth Ctr, Dept Med, Div Gastroenterol & Hepatol, Montreal, PQ, Canada