
Dr. Kevin Knopf, a medical oncologist, shares his questions for Lance Armstrong and the participants in the Livestrong Presidential Cancer Forum.
1) Breast Cancer and Race. Breast cancer continues to show a survival disparity by race - women of color continue to fare more poorly in terms of survival and have a later stage of cancer at diagnosis. How do you propose to reverse this?
2) Environmental Causes of Cancer. It is thought that many cancers may be attributable to...

