References
- Andersen KW, Mouridsen HT. Danish Breast Cancer Co-operative Group (DBCG). A description of the register of the nation-wide programme for primary breast cancer. Acta Oncol 1988; 27: 627–47.
- DBCG. Copenhagen: DBCG Danish Breast Cancer Coopera-tive Group 1977–1997; 1998. p. 5–91.
- Storm HH, Michelsen EV, Clemmensen IH, Pihl J. The Danish Cancer Registry—history, content, quality and use. Dan Med Bull 1997; 44: 535–9.
- Jensen AR, Overgaard J, Storm HH. Validity of breast cancer in the Danish Cancer Registry. A study based on clinical records from one county in Denmark. Eur J Cancer Prey 2002; 11: 359–64.
- Kamby C. The pattern of metastases in human breast cancer: methodological aspects and influence of prognostic factors. Cancer Treat Rev 1990; 17: 37–61.
- Nielsen JC, Andersen E, Zedeler K. Breast cancer in the county of Viborg during 1983-1989. A quality control study. Ugeskr Laeger 1994; 156: 2737–41.
- Grabau DA, Jensen MB, Blichert-Toft M, et al. The impor-tance of surgery and accurate axillary staging for survival in breast cancer. Eur J Surg Oncol 1998; 24: 499–507.
- Rostgaard K, Ho1st H, Mouridsen HT, Lynge E. Do clinical databases render population-based cancer registers obsolete? The example of breast cancer in Denmark. Cancer Causes Control 2000; 11: 669–74.
- Olsen J, Basso O, Sorensen HT. What is a population-based registry? Scand J Public Health 1999; 27: 78.
- Overgaard M, Hansen PS, Overgaard J, et al. Postoperative radiotherapy in high-risk premenopausal women with breast cancer who receive adjuvant chemotherapy. Danish Breast Cancer Cooperative Group 82b Trial. N Engl J Med 1997; 337: 949–55.
- Hansen PS, Andersen E, Andersen KW, Mouridsen HT. Quality control of end results in a Danish adjuvant breast cancer multi-center study. Acta Oncol 1997; 36: 711–4.
- Blichert-Toft M, Mouridsen H, Andersen KW Clinical trials. Semin Surg Oncol 1996; 12: 32–8.
- Wohlfahrt J, Mouridsen H, Andersen PK, Melbye M. Repro-ductive risk factors for breast cancer by receptor status, histology, laterality and location. Int J Cancer 1999; 81: 49–55.