[1] Univ Oslo, GI Endoscopy, Univ Hosp, Rikshosp, Oslo, Norway
[2] Univ Oslo, Fac Med, Oslo, Norway
[3] Univ Oslo, Norwegian PSC Res Ctr, Oslo, Norway
[4] Univ Oslo, Div Canc Med Surg & Transplantat, Dept Transplantat Med, Sect Gastroenterol,Oslo Univ Hosp,Rikshosp, Oslo, Norway
[5] Univ Oslo, Inst Clin Med, Oslo, Norway
[6] Robert Bosch Krankenhaus, Abt Gastroenterol Hepatol & Endokrinol, Stuttgart, Germany
[7] Univ Libre Bruxelles, Dept Gastroenterol Hepatopancreatol & Digest Onco, Erasme Hosp, Brussels, Belgium
[8] UPMC Univ Paris 06, Ctr Reference Malad Inflammatoires Foie & Voies B, Hop St Antoine, Assistance Publ Hop Paris,Ser Hepatol, Paris, France
[9] Gedyt Endoscopy Ctr, Buenos Aires, DF, Argentina
[10] Univ Helsinki, Cent Hosp, Dept Gastroenterol, Helsinki, Finland
[11] Med Univ Graz, Res Unit Expt & Mol Hepatol, Div Gastroenterol & Hepatol, Dept Internal Med, Graz, Austria
[12] Univ Birmingham, NIHR, Birmingham Liver Biomed Res Unit BRU, Birmingham, W Midlands, England
[13] Univ Birmingham, Liver Res Ctr, Birmingham, W Midlands, England
[14] Sapienza Univ, Pathol Sci, Rome, Italy
[15] Univ Politecn Marche, Osped Riuniti, Univ Hosp, Clin Gastroenterol & Hepatol, Ancona, Italy
[16] UCL, Inst Liver & Digest Hlth, Royal Free Campus, London, England
[17] Klinikum Friedrichshain, Dept Gastroenterol & Intervent Endoscopy, Berlin, Germany
[18] Erasmus MC, Univ Med Ctr, Dept Gastroenterol & Hepatol, Rotterdam, Netherlands
[19] Acad Med Ctr, Dept Gastroenterol & Hepatol, Amsterdam, Netherlands
[20] Univ Med Ctr Hamburg Eppendorf, Dept Med 1, Hamburg, Germany
[21] Univ Med Ctr Hamburg Eppendorf, Martin Zeitz Ctr Rare Dis, Hamburg, Germany
[22] Karolinska Inst, Ctr Digest Dis, Karolinska Univ Hosp, Stockholm, Sweden
[23] Karolinska Inst, Div Surg, CLINTEC, Stockholm, Sweden
[24] Catholic Univ, Digest Endoscopy Unit, Rome, Italy
[25] Nuovo Regina Margherita Hosp, Digest Endoscopy Unit, Rome, Italy