[1] Univ Hosp Geneva, Div Gastroenterol & Hepatol, Serv Gastroenterol & Hepatol, CH-1205 Geneva, Switzerland
[2] Ruhr Univ Bochum, Dept Med, D-44892 Bochum, Germany
[3] Hosp Gen Univ Alicante, Endoscopy Unit, Alicante, Spain
[4] ESGENA, Ulm, Germany
[5] Univ Med Ctr Utrecht, European Soc Anaesthesiol, Utrecht, Netherlands
[6] ESGENA, Basel, Switzerland
[7] Benizelion Gen Hosp, Dept Gastroenterol, Iraklion, Crete, Greece
[8] Univ Amsterdam, Acad Med Ctr, Dept Gastroenterol & Hepatol, NL-1105 AZ Amsterdam, Netherlands
[9] Petz Aladar Hosp, Dept Internal Med & Gastroenterol 1, Gyor, Vasvari, Hungary
[10] Med Univ Graz, Div Gastroenterol & Hepatol, Dept Internal Med, Graz, Austria
[11] Univ Copenhagen, Herlev Hosp, Dept Surg Gastroenterol, Hellerup, Denmark
[12] Univ Copenhagen, Gentofte Hosp, Endoscop Unit, Hellerup, Denmark
[13] Deutsch Klin Diagnost, Div Gastroenterol, D-6200 Wiesbaden, Germany
[14] Univ Hosp Geneva, Dept Anesthesiol, Geneva, Switzerland