1. Maitland NJ, Stanbridge LJ, Dussupt V. Targeting gene therapy for prostate cancer. Curr Pharm Des 2004, 10:531–55.
2. Fidler IJ. Critical determinants of cancer metastasis; rationale for therapy. Cancer Chemother Pharmacol 1991, 43:S3–S10.
3. Bernards R, Weinberg RA. A progession puzzle. Nature 2002, 418:823.
4. Greaves M. Cancer: the Evolutionary Legacy. Oxford, New York: Oxford Univ Press, 2000, pp. 57–61.
5. Paget S. The distribution of secondary growths in cancer of the breast. Lancet 1889, 1:99–101.