Factor Five Leiden Support - Support for sufferers of the Factor Five Leiden blood clotting disorder, an inherited blood condition discovered in 1995. History, glossary, and meeting information (Oregon).
Living with Factor V Leiden - Factor V Leiden is the most common hereditary blood coagulation disorder in the United States. It is present in 5% of the American population.
University of Illinois Patient Resources - Description of factor V Leiden, its risks and treatment options. Also discusses the impact of other conditions on this disease.