Prognostic value of p53, hMLH1, hMSH2, MGMT and COX-2 in the QUASAR-1 Dukes' stage B colorectal cancer cohort - Jubb, A; Stahlschmidt, J; Bell, S; Gray, S; Harkins, L; Scott, N; McConkey, C; Grummett, S; Barnwell, J; Seymour, M; Gray, R; Kerr, D; et al. (2002)