Statistics: http://www.bmj.com/cgi/content/full/321/7261/624

Breast Cancer Network
BCN (Breast Cancer Research)

Oncolink
http://www.oncolink.upenn.edu
The University of Pennsylvania Cancer Center Resource. The best single one-stop resource with information on all aspects of cancer, and pointers to other sites.

PDQ Physician Statement on Breast Cancer
http://imsdd.meb.uni-bonn.de/cancernet/100013.html
http://www.oncolink.upenn.edu/pdq_html/1/engl/100013.html
Although the NCI Statements can be obtained directly from the NCI, this excellent version hyperlinks references in the text to the article abstracts, a major convenience. It is also available in Spanish.