[1] Norfolk & Norwich Univ Hosp NHS Trust, Dept Gastroenterol, Norwich, England
[2] Univ Edinburgh, Div Pathol, Edinburgh, Scotland
[3] Univ Edinburgh, MRC Ctr Inflammat Res, Edinburgh, Scotland
[4] Kings Coll London, Dept Pathol, London, England
[5] Leeds Teaching Hosp NHS Trust, Dept Radiol, Leeds, England
[6] Christie Hosp, Dept Radiol, Manchester, England
[7] UCL, GI Div, London, England
[8] Aintree Univ Hosp NHS Fdn Trust, Digest Dis Unit, Liverpool, England
[9] UCL Med Sch, Dept Surg, Royal Free Campus, London, England
[10] Aintree Univ Hosp NHS Fdn Trust, Dept Surg, Liverpool, England
[11] Newcastle Univ, Dept Surg, Newcastle Upon Tyne, England
[12] Kings Coll London, Dept Hepatobiliary & Pancreat Surg, London, England
[13] St James Univ Hosp, John Goligher Colorectal Unit, Leeds, England
[14] UCL, UCL Canc Inst, Dept Oncol, London, England
[15] Univ Manchester, Christie NHS Fdn Trust, Dept Med Oncol, Manchester, England
[16] St James Univ Hosp, Dept Oncol, Leeds, England
[17] UCL, Dept Med Phys & Biomed Engn, London, England
[18] Kings Coll Hosp NHS Fdn Trust, London, England
[19] AMMF, Stansted, Essex, England
[20] Chair Trustees PSC Support, Didcot, England
[21] Imperial Coll London, Dept Metab Digest & Reprod, Hepatol & Gastroenterol Sect, London W2 1NY, England
[22] Imperial Coll Healthcare NHS Trust, London, England