MedlinePlus: Congenital Protein C or S Deficiency
Brief information about these hypercoagulability disorders including causes, treatment, and prognosis.
http://www.nlm.nih.gov/medlineplus/ency/article/000559.htm

Viewpoint Online: Coagulation
Features articles about blood coagulation disorders including activated protein C resistance, von Willbrand's disease, and hypercoagulability.
http://www.beckmancoulter.com/Coulter/Techpubs/coagulation/

MedlinePlus: Factor X Deficiency
Information about this inherited disorder that causes abnormal bleeding including causes, treatment, and prognosis.
http://www.nlm.nih.gov/medlineplus/ency/article/000553.htm

MedlinePlus: Factor V Deficiency
Provides brief information about this inherited bleeding disorder, which is similar to hemophilia. Includes causes, symptoms, and prognosis.
http://www.nlm.nih.gov/medlineplus/ency/article/000550.htm

MedlinePlus: Factor VII Deficiency
Brief information about this inherited bleeding disorder including causes, symptoms, and prognosis.
http://www.nlm.nih.gov/medlineplus/ency/article/000548.htm

MedlinePlus: Factor XII Deficiency
Also known as Hageman factor, this is a congenital coagulation disorder that causes prolonged coagulation in a test tube but does not cause abnormal bleeding. Includes brief information.
http://www.nlm.nih.gov/medlineplus/ency/article/000545.htm

The Factor VIIa Source
Information about topics related to the pathophysiology, pharmacology, and clinical aspects of bleeding, coagulation, and hemostasis, including information about recombinant coagulation Factor VIIa.
http://factorviia.com/

Molecular Genetics of Blood Clotting
David Ginsburg, M.D: An article covering von Willebrand Factor, coagulation factor V, plasminogen activator inhibitor-1, primary pulmonary hypertension and bone marrow transplantation.
http://www.hhmi.org/research/investigators/ginsburg.html

Coag Capsules
Publication from Hemex Laboratories offering articles about coagulation-related issues.
http://www.hemex.com/educational_info/coag_capsules.php

Rare Bleeding Disorder Database (RBDD)
A network of the hemophilia centres around the world by International Society of Thrombosis and Haemostasis.
http://www.rbdd.org

Vicky's Website
The story of one woman's battle against acquired factor VIII inhibitor.
http://www.factorviii.org

UIUC Hematology Resource Page
Features diagrams and information about the various thrombophilic genetic markers, general information about clotting, glossary, and list of research sources.
http://www.med.uiuc.edu/hematology/

Suite 101
Article provides an overview of the disorders of clotting, resulting in both clotting and bleeding.
http://generalmedicine.suite101.com/article.cfm/blood_clotting_disorders