1. Clinical practice guidelines for the use of tumor markers in breast and colorectal cancer;J. Clin. Oncol,1996
2. 1997 update of recommendations for the use of tumor markers in breast and colorectal cancer;J. Clin. Oncol.,1997
3. Meeting highlights;Goldhirsch;J. Natl. Cancer Inst.,1998
4. Design and conduct of clinical trials;Simon,1993
5. Tamoxifen for early breast cancer;Lancet,1998