[1] Univ Libre Bruxelles, Dept Gastroenterol Hepatopancreatol & Digest Onco, CUB Hop Erasme, Route Lennik 808, B-1070 Brussels, Belgium
[2] Royal Free Hosp, Royal Free Unit Endoscopy, UCL Inst Liver & Digest Hlth, London, England
[3] Royal Free Hosp, UCL Inst Liver & Digest Hlth, Ctr Gastroenterol, London, England
[4] Evangel Krankenhaus Dusseldorf, Dept Gastroenterol & Therapeut Endoscopy, Dusseldorf, Germany
[5] AZ Nikolaas Hosp, Nutr Support Team, Moerlandstr 1, B-9100 St Niklaas, Belgium
[6] Karolinska Univ Hosp, Dept Upper Digest Dis, Stockholm, Sweden
[7] Karolinska Inst, Dept Clin Sci Intervent & Technol CLINTEC, Div Surg, Stockholm, Sweden
[8] Bernhoven Hosp, Dept Gastroenterol, Uden, Netherlands
[9] Iuliu Hatieganu Univ Med & Pharm, Dept Gastroenterol, Cluj Napoca, Romania
[10] Royal Hallamshire Hosp, Acad Unit Gastroenterol, Sheffield, S Yorkshire, England
[11] Univ Sheffield, Sheffield, S Yorkshire, England
[12] Karolinska Inst, Dept Med Solna, Stockholm, Sweden
[13] Ersta Hosp, Dept Med, Stockholm, Sweden
[14] Univ Cote Azur, CHU Nice, Gastroenterol & Nutr, Nice, France
[15] Leiden Univ, Dept Gastroenterol & Hepatol, Med Ctr, Leiden, Netherlands