Ferreri, A. J. M. et al. Nat. Rev. Clin. Oncol. 6, 658–669 (2009); doi:10.1038/nrclinonc.2009.147

In the November 2009 issue of Nature Reviews Clinical Oncology, Andrés J. M. Ferreri and Riccardo Dolcetti would like it acknowledged that both authors contributed equally to the review article.