On page 3734 in the 7 April 2011 issue, in “Results and discussion,” there is an error in the percentage shown in the first sentence of the last paragraph; 67.5% should be 21.1%. The sentence read, “The outcome for the 34 patients who were not in MMR at the beginning of the study was less satisfactory (probability of losing their CCyR, 67.5%, P = .0007).” The sentence should have read, “The outcome for the 34 patients who were not in MMR at the beginning of the study was less satisfactory (probability of losing their CCyR, 21.1%, P = .0007).”