Use of radiotherapy in patients with oesophageal, stomach, colon, rectal, liver, pancreatic, lung, and ovarian cancer: an International Cancer Benchmarking Partnership (ICBP) population-based study

McPhail S, Barclay M E, Swann R, Johnson S A, Alvi R, Barisic A, Bucher O, Creighton N, Denny C A, Dewar R A, Donnelly D W, Dowden J J, Downie L, Finn N, Gavin A T, Habbous S, Huws D W, Eshwar Kumar S, May L, McClure C A, Whitfield E.