[1] Alicante Univ, Alicante Inst Hlth & Biomed Res, Gastroenterol Dept, Gen Hosp, Alicante, Spain
[2] FISABAO, Fdn Promot Hlth & Biomed Res Valencia Reg, Atenena Res Grp, Sant Joan dAlacant, Spain
[3] Miguel Hernandez Univ Elche, Dept Hlth Psychol, Elche, Spain
[4] McGill Univ, Div Gastroenterol, Hlth Ctr, Montreal, PQ, Canada
[5] Changi Gen Hosp, Dept Gastroenterol, Singapore, Singapore
[6] Dr C Bonorino Udaondo Gastroenterol Hosp, Oncol Sect, Buenos Aires, DF, Argentina
[7] John Hunter Hosp, Dept Gastroenterol, Newcastle, NSW, Australia
[8] Univ Newcastle, Sch Med & Publ Hlth, Newcastle, NSW, Australia
[9] Univ Barcelona, Hosp Clin Barcelona, IDIBAPS, CIBERehd,Gastroenterol Dept, Barcelona, Spain
[10] Univ Barcelona, Hosp Clin Barcelona, IDIBAPS, CIBERehd,Liver Unit, Barcelona, Spain
[11] Univ Barcelona, Hosp Clin Barcelona, CIBERehd, IDIBAPS, Barcelona, Spain
[12] Cleveland Clin, Digest Dis & Surg Inst, Cleveland, OH 44106 USA
[13] Univ Zurich, Stadtspital Waid & Triemli Abt Gastroenterol, Zurich, Switzerland
[14] Virginia Mason Med Ctr, Seattle, WA 98101 USA
[15] Netherlands Canc Inst, Dept Gastrointestinal Oncol, Amsterdam, Netherlands
[16] Leiden Univ, Dept Gastroenterol & Hepatol, Med Ctr, Leiden, Netherlands
[17] Mayo Clin Arizona, Div Gastroenterol & Hepatol, Dept Internal Med, Phoenix, AZ USA
[18] Univ Ulsan, Coll Med, Asan Med Ctr, Dept Gastroenterol, Seoul, South Korea
[19] Univ Ulsan, Coll Med, Asan Med Ctr, Inflammatory Bowel Dis Ctr, Seoul, South Korea
[20] Washington DC Vet Affairs Med Ctr, Div Gastroenterol & Hepatol, Washington, DC USA
[21] Univ Padua, Dept Surg Oncol & Gastroenterol, Gastroenterol Unit, Padua, Italy
[22] Johns Hopkins Univ, Div Gastroenterol & Hepatol, Sch Med, Baltimore, MD USA
[23] Cleveland Clin, Dept Gastroenterol Hepatol & Nutr, Digest Dis & Surg Inst, Cleveland, OH 44106 USA
[24] Johns Hopkins Univ, Sibley Mem Hosp, Div Gastroenterol, Washington, DC USA
[25] Radboud Univ Nijmegen, Dept Gastroenterol & Hepatol, Med Ctr, NL-6500 HB Nijmegen, Netherlands