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Kerr DJ, McArdle CS, Ledermann J, Taylor I, Sherlock DJ, Schlag PM, Buckels J, Mayer D, Cain D, Stephens RJ; Medical Research Council's colorectal cancer study group; European Organisation for Research and Treatment of Cancer colorectal cancer study group.Kerr DJ, et al. Among authors: mcardle cs.Lancet. 2003 Feb 1;361(9355):368-73. doi: 10.1016/S0140-6736(03)12388-4.Lancet. 2003.PMID: 12573372Clinical Trial.