The American Cancer Society, in collaboration with EmergingMed, offers a free online service that matches and refers people to clinical trials that are sponsored by the government and other not-for-profit organizations.

The American College of Gastroenterology is an organization of digestive disease specialists. The Web site contains information about common gastrointestinal problems.

The American Cancer Society conducts educational programs and offers many services to people with cancer and to their families. Staff at the toll-free numbers have information about services and activities in local areas and can provide referrals to local ACS divisions.

This organization offers information and educational programs on cancer.

The National Cancer Institute (NCI) is a U.S. government agency that provides up-to-date information about the prevention, detection, and treatment of cancer. NCI also offers supportive care to people with cancer and to their families. NCI information is also available to doctors, nurses, and other health professionals. NCI provides the latest information about clinical trials. The Cancer Information Service, a service of NCI, has trained staff members available to answer questions and send free publications. Spanish-speaking staff members are also available.

The U.S. National Institutes of Health fosters health protection and improvement for the general public. NIH provides access to medical information, current scientific research, publications and fact sheets, and many other resources.

UOAA is an association of affiliated, nonprofit support groups committed to improving the quality of life of people who have, or will have, an intestinal or urinary diversion.