[1] Univ Hosp Leuven, Dept Gastroenterol & Hepatol, Leuven, Belgium
[2] Vrije Univ Amsterdam, Amsterdam UMC, AGEM Inst, Dept Gastroenterol & Hepatol, Amsterdam, Netherlands
[3] Imelda Gen Hosp, Dept Gastroenterol & Hepatol, Bonheiden, Belgium
[4] Leeds Teaching Hosp NHS Trust, Dept Gastroenterol & Hepatol, Leeds, W Yorkshire, England
[5] Asian Inst Gastroenterol Hosp, Dept Med Gastroenterol, Hyderabad, India
[6] Colentina Clin Hosp, Dept Gastroenterol, Bucharest, Romania
[7] Inst Clin & Expt Med, Dept Gastroenterol & Hepatol, Prague, Czech Republic
[8] Vrije Univ Brussel, Univ Ziekenhuis Brussel, Dept Surg, Dept Gastroenterol & Hepatol, Brussels, Belgium
[9] Vrije Univ Brussel, Univ Ziekenhuis Brussel, Dept Adv Intervent Endoscopy, Brussels, Belgium
[10] Univ Catholic Louvain, CHU UCL Namur, Dept Gastroenterol & Hepatol, Yvoir, Belgium
[11] Mayo Clin, Dept Gastroenterol & Hepatol, Rochester, MN 55905 USA
[12] IRCCS San Raffaele Sci Inst, Pancreatobiliary Endoscopy & Endosonog Div, Milan, Italy
[13] Univ Cattolica Sacro Cuore, Fdn Policlin Univ A Gemelli IRCCS, Digest Endoscopy Unit, Rome, Italy
[14] Catholic Univ, Ctr Endoscop Res Therapeut & Training CERTT, Rome, Italy
[15] Paoli Calmettes Inst, Dept Gastrointestinal Dis, Marseille, France
[16] Johns Hopkins Univ Hosp, Div Gastroenterol & Hepatol, Baltimore, MD 21287 USA
[17] Calif Pacific Med Ctr, Intervent Endoscopy Serv, San Francisco, CA USA
[18] Aix Marseille Univ, Hop Nord, AP HP, Dept Gastroenterol, Marseille, France
[19] Hosp Univ Rio Hortega, Dept Gastroenterol, Valladolid, Spain
[20] Leiden Univ, Med Ctr, Dept Gastroenterol & Hepatol, Leiden, Netherlands