http://www.nsabp.pitt.edu

It's a clinical trials cooperative group supported by the National Cancer Institute (NCI). NSABP has enrolled more than 60,000 women and men in clinical trials in breast and colorectal cancer. It are headquartered in Pittsburgh, Pennsylvania and have research sites at nearly 200 major medical centers, university hospitals, large oncology practice groups, and health maintenance organizations in the United States, Canada, Puerto Rico, and Australia. At those sites and their satellites, more than 5000 physicians, nurses, and other medical professionals conduct NSABP treatment and prevention trials.