[1] CHU Nice, Dept Digest Endoscopy, Nice, France
[2] Univ Amsterdam, Amsterdam UMC, Canc Ctr Amsterdam, Dept Surg, Amsterdam, Netherlands
[3] Univ Libre Bruxelles, Erasme Hosp, Gastroenterol Hepatopancreatol & Digest Oncol, Brussels, Belgium
[4] Karolinska Univ Hosp, Ctr Digest Dis, Dept Surg, Stockholm, Sweden
[5] Evangel Krankenhaus Dusseldorf, Dept Gastroenterol, Dusseldorf, Nordrhein Westf, Germany
[6] Catholic Univ Louvain, Clin Univ St Luc, Gastroenterol & Hepatol Dept, Brussels, Belgium
[7] Masaryk Univ, Univ Hosp Brno, Dept Gastroenterol & Internal Med, Fac Med, Brno, Czech Republic
[8] Masaryk Univ, Univ Hosp Brno, Fac Med, Dept Surg, Brno, Czech Republic
[9] Univ Cattolica Sacro Cuore, Fdn Policlin Univ A Gemelli IRCCS, Digest Endoscopy Unit, Rome, Italy
[10] Aziende Socio Sanit Terr Rhodense, Gastroenterol, Garbagnate Milanese, Italy
[11] Western Hlth, Dept Endoscop Serv, Melbourne, Vic, Australia
[12] Univ Melbourne, Melbourne Med Sch, Western Hlth, Dept Med, Melbourne, Vic, Australia
[13] Ramsay Generale Sante, Hop Prive Jean Mermoz, Serv Gastroenterol, Lyon, France
[14] Freeman Rd Hosp, Dept Gastroenterol, Newcastle Upon Tyne, Tyne & Wear, England
[15] Univ Paris, Georges Pompidou European Hosp, AP HP Ctr, Dept Gastroenterol, Paris, France
[16] Klin Hirslanden, Gastroenterol Ctr, Zurich, Switzerland
[17] Hop Nord Marseille, AP HP, Dept Gastroenterol, Marseille, France
[18] Leiden Univ, Med Ctr, Dept Gastroenterol & Hepatol, Leiden, Netherlands