[1] Univ Manchester, Div Diabet Endocrinol & Gastroenterol, Manchester, Lancs, England
[2] Univ Hosp South Manchester, Dept Gastroenterol, Manchester, Lancs, England
[3] Manchester Metropolitan Univ, Healthcare Sci, Manchester, Lancs, England
[4] Univ Nottingham Hosp, Dept Histopathol, Nottingham, England
[5] Nottingham Univ Hopsitals NHS Trust, Dept Microbiol, Nottingham, England
[6] Univ Nottingham, NIHR BRU Gastroenterol & Hepatol, Nottingham, England
[7] Nottingham Univ Hosp NHS Trust, Dept Gastroenterol & Hepatol, Nottingham, England
[8] Cent Manchester NHS Fdn Trust, Res & Innovat Dept, Manchester, Lancs, England