[1] Royal Marsden Hosp, GI Unit, London, England
[2] Oslo Univ Hosp, Dept Oncol, Oslo, Norway
[3] Univ Coll Hosp, Dept GI Oncol, London, England
[4] UCL Canc Inst, UCL Canc Trials Ctr, London, England
[5] Royal Marsden NHS Fdn Trust, Dept Radiol, London, England
[6] Univ Manchester, Christie NHS Fdn Trust, Fac Biol Med & Hlth, Div Canc Sci,Sch Med Sci, Manchester, Lancs, England
[7] Univ Hosp North Norway, Dept Clin Pathol, Tromso, Norway
[8] Univ Paris Saclay, Gustave Roussy Canc Campus, INSERM 1030, Villejuif, France
[9] Univ Campania Luigi Vanvitelli, Dept Precis Med, Naples, Italy
[10] Asklepios Hosp Altona, Dept Hematol Oncol Palliat Care Med & Rheum, Hamburg, Germany