[1] Royal Marsden NHS Fdn Trust London & Surrey, Gastrointestinal Unit, London, England
[2] Royal Marsden NHS Fdn Trust London & Surrey, Dept Nutr & Dietet, London, England
[3] Royal Marsden NHS Fdn Trust London & Surrey, Dept Surg, London, England
[4] Royal Marsden NHS Fdn Trust London & Surrey, Dept Med, London, England
[5] Guys & St Thomas NHS Fdn Trust, Guys Hosp, Canc Serv, London, England
[6] Leeds Teaching Hosp NHS Trust, Gastrointestinal Serv, Leeds, W Yorkshire, England
[7] Leeds Teaching Hosp NHS Trust, Liver Serv, Leeds, W Yorkshire, England
[8] Univ Hosp Southampton NHS Fdn Trust, Southampton, Hants, England
[9] Whittington Hosp NHS Trust, London, England
[10] Kent & Medway Canc Network, Chatham, Kent, England
[11] Univ Coll London Hosp, Canc Serv, London, England
[12] Mt Vernon Canc Ctr, Northwood, Middx, England
[13] Belfast City Hosp, Northern Ireland Canc Trials Network, Belfast BT9 7AD, Antrim, North Ireland
[14] New Cross Hosp, Dept Oncol, Wolverhampton, W Midlands, England