[1] Royal Liverpool & Broadgreen Univ Hosp NHS Trust, Natl Inst Hlth Res, Liverpool Pancreas Biomed Res Unit, Liverpool, Merseyside, England
[2] Royal Liverpool & Broadgreen Univ Hosp NHS Trust, Clin Directorate Gen Surg, Liverpool, Merseyside, England
[3] Royal Liverpool & Broadgreen Univ Hosp NHS Trust, Dept Pathol, Liverpool, Merseyside, England
[4] Royal Liverpool & Broadgreen Univ Hosp NHS Trust, Clin Directorate Radiol, Liverpool, Merseyside, England
[5] Univ Liverpool, Canc Res UK Liverpool Canc Trials Unit, Liverpool L69 3GA, Merseyside, England