[1] Herlev Univ Hosp, Med Sect, Ctr Digest Dis, DK-2730 Copenhagen, Denmark
[2] Univ Zagreb, Sch Med, Univ Hosp Ctr Zagreb, Div Gastroenterol & Hepatol, Zagreb 41001, Croatia
[3] Nicosia Private Practice, Nicosia, Cyprus
[4] Charles Univ Prague, IBD Ctr ISCARE, Prague, Czech Republic
[5] Hosp Ceske Budejovice, Dept Gastroenterol, Ceske Budejovice, Czech Republic
[6] Amager Hosp, Dept Med, Amager, Denmark
[7] Herning Cent Hosp, Dept Med, Herning, Denmark
[8] Viborg Reg Hosp, Dept Med, Viborg, Denmark
[9] Hosp Southern Jutland, Organ Ctr, Aabenraa, Denmark
[10] Univ Southern Denmark, Inst Reg Hlth Res, Odense, Denmark
[11] Aarhus Univ Hosp, Dept Med Hepatol & Gastroenterol 5, Aarhus, Denmark
[12] Odense Univ Hosp, Dept Med Gastroenterol, DK-5000 Odense, Denmark
[13] Tartu Univ Hosp, Div Gastroenterol & Endocrinol, Tartu, Estonia
[14] Natl Hosp Faroe Islands, Dept Med, Torshavn, Faroe Islands, Denmark
[15] Tampere Univ Hosp, Dept Gastroenterol & Alimentary Tract Surg, Tampere, Finland
[16] Univ Hosp, Div Internal Med 1, Ioannina, Greece
[17] Univ Hosp, Hepatogastroenterol Unit, Ioannina, Greece
[18] Dronning Ingrids Hosp, Dept Med, Nuuk, Greenland
[19] Semmelweis Univ, Dept Med 1, H-1085 Budapest, Hungary
[20] Natl Univ Hosp Reykjavik, Sect Gastroenterol & Hepatol, Dept Internal Med, Reykjavik, Iceland
[21] Adelaide & Meath Hosp, Dept Gastroenterol, TCD, Dublin, Ireland
[22] Soroka Med Ctr, Dept Gastroenterol & Hepatol, IL-84101 Beer Sheva, Israel
[23] Ben Gurion Univ Negev, IL-84105 Beer Sheva, Israel
[24] Careggi Hosp, Gastroenterol Unit, Florence, Italy
[25] Azienda Osped Univ Padova, UO Gastroenterol, Padua, Italy
[26] Lithuanian Univ Hlth Sci, Inst Digest Res, Kaunas, Lithuania
[27] State Univ Med & Pharm Republ Moldova, Dept Gastroenterol, Kishinev, Moldova
[28] Hosp de Vale de Sousa, Oporto, Portugal
[29] Hosp Sao Joao, Dept Gastroenterol, Oporto, Portugal
[30] Oporto Med Sch, Inst Pharmacol & Therapeut, Oporto, Portugal
[31] Univ Porto, Inst Mol & Cell Biol, P-4100 Oporto, Portugal
[32] Univ Med Victor Babes, Gastroenterol Clin, Timisoara, Romania
[33] Moscow Reg Res Clin Inst, Dept Gastroenterol, Moscow, Russia
[34] Complexo Hosp Univ Vigo, Dept Gastroenterol, Vigo, Spain
[35] Karolinska Inst, Div Gastroenterol & Hepatol, Stockholm, Sweden
[36] Cty Council Ostergotland, Dept Gastroenterol UHL, Linkoping, Sweden
[37] Orebro Univ Hosp, Div Gastroenterol, Dept Med, Orebro, Sweden
[38] Univ Orebro, Sch Hlth & Med Sci, SE-70182 Orebro, Sweden
[39] Univ London Imperial Coll Sci Technol & Med, St Marks Hosp, London, England
[40] Hull Royal Infirm, Hull & York Med Sch, Hull & East Yorkshire NHS Trust, Kingston Upon Hull HU3 2JZ, N Humberside, England
[41] Gentofte Univ Hosp, Dept Med Gastroenterol, Copenhagen, Denmark