» 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).    http://www.factorfiveleidensupport.org/

» 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.    http://www.fvleiden.org/

» 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.    http://www.med.uiuc.edu/hematology/PtFacV2.htm

» Yahoo! Groups: Leiden Factor V Support    Message board and chat room for people diagnosed with the Factor V Leiden genetic disorder.    http://health.groups.yahoo.com/group/leidenfactorvsupport/