Investigating the poor outcomes of BRAF-mutant advanced colorectal cancer: analysis from 2530 patients in randomised clinical trials द्वारा Seligmann, JF, Fisher, D, Smith, CG, Richman, SD, Elliott, F, Brown, S, Adams, R, Maughan, T, Quirke, P, Cheadle, J, Seymour, M, Middleton, G