[1] Lund Univ, Dept Hlth Sci, Lund, Sweden
[2] Skane Univ Hosp, Dept Surg & Gastroenterol, Entregatan 7, S-22242 Lund, Sweden
[3] Reg Canc Ctr South, Lund, Sweden
[4] Lund Univ, Dept Clin Sci Lund, Div Oncol, Lund, Sweden
[5] Karolinska Inst, Dept Mol Med & Surg, Stockholm, Sweden
[6] Imperial Coll London, Dept Surg & Canc, London, England
[7] Lund Univ & Reg Skane, Inst Palliat Care, Lund, Sweden