1. Mitelman, F. (ed. Bertil Johansson, F. M.) Catalog of Chromosome Aberrations in Cancer (Wiley–Liss, New York, 1994).
2. Loeb, L. A., Springgate, C. F. & Battula, N. Errors in DNA replication as a basis of malignant changes. Cancer Res. 34, 2311–2321 (1974).
3. Shih, I. M. et al. Evidence that genetic instability occurs at an early stage of colorectal tumorigenesis. Cancer Res. 61, 818–822 (2001).
4. Lengauer, C., Kinzler, K. W. & Vogelstein, B. Genetic instability in colorectal cancers. Nature 386, 623–627 (1997).
5. Phear, G., Bhattacharyya, N. P. & Meuth, M. Loss of heterozygosity and base substitution at the APRT locus in mismatch-repair-proficient and-deficient colorectal carcinoma cell lines. Mol. Cell. Biol. 16, 6516–6523 (1996).