Correction to: British Journal of Cancer (2004) 90, 1756–1759. doi:10.1038/sj.bjc.6601763 Due to an error, Table 1 and some text on page 1756 of the above paper were shown incorrectly. The correct Table 1 and text are given below: On page 1756 of this article, the second sentence in the Results section should read as follows: