Arising from: Blair J M et al. (2006) Nat Clin Pract Oncol 3: 41–49 10.1038/ncponc0381

The authors acknowledge the contributions of Professor Pamela J. Russell and her laboratory (Oncology Research Centre, Prince of Wales Hospital, Department of Clinical Medicine, University of New South Wales, Randwick, Sydney), particularly those of Ms. Lara Perryman and Ms. Kylie Deguara, to Figure 4. The authors apologise that this was omitted from the manuscript.