[1] Otto von Guericke Univ, Dept Gastroenterol Hepatol & Infect Dis, Magdeburg, Germany
[2] Univ Bordeaux, Inserm U853, Bacteriol Lab, Bordeaux, France
[3] Trinity Coll Dublin, Fac Hlth Sci, Dublin, Ireland
[4] Hosp Univ La Princesa, Inst Invest Sanitaria Princesa IP, Dept Gastroenterol, Madrid, Spain
[5] Ctr Invest Biomed Red Enfermedades Hepat & Digest, Madrid, Spain
[6] Erasmus Univ, Med Ctr, Rotterdam, Netherlands
[7] Gen Infirm Leeds, Leeds, W Yorkshire, England
[8] Univ Bologna, Internal Med & Gastroenterol, Bologna, Italy
[9] Gastroenterol & Liver Unit, Internal Med, Rome, Italy
[10] Michael E DeBakey VA Med Ctr, Dept Med 111D, Houston, TX USA
[11] McMaster Univ, Dept Med, Hamilton, ON, Canada
[12] Hillcroft, Beaconsfield, Bucks, England
[13] McMaster Univ, Dept Gastroenterol, Hamilton, ON, Canada
[14] Henry Dunant Hosp, Dept Gastroenterol, Athens, Greece
[15] Univ Padua, Dept Diagnost Sci, Padua, Italy
[16] Hannover Med Sch, Inst Med Mikrobiol, Hannover, Germany
[17] Jichi Med Sch, Dept Med, Shimotsuke, Tochigi, Japan
[18] Univ New South Wales, St George & Sutherland Clin Sch, Sydney, NSW, Australia