[1] Klinikum Johann Wolfgang Goethe Univ, Med Klin 1, Frankfurt, Germany
[2] Azienda Osped Univ, Unita Operat Complessa Gastroenterol & Epatol, Palermo, Italy
[3] IRCCS San Matteo Univ Hosp, Pavia, Italy
[4] Univ Milan, Milan, Italy
[5] Hosp Clin Barcelona, Barcelona, Spain
[6] Mt Sinai Sch Med, New York, NY USA
[7] Bayer HealthCare Pharmaceut, Montville, NJ USA