The Whiteley Clinic - Economy class syndrome, deep vein thrombosis (DVT), air travel, travel, advice and precautions.

The Sol Sherry Thrombosis Research Center - Features center information, staff biographies, list of seminars offered, and links to resources.

Thrombosis - A wide range of helpful thrombosis information concerning treatment, prevention, diagnosis, email groups, and support groups.

American Health Consultants Online Symposia - Free continuing medical education symposia on acute thrombosis management in emergency medicine.

Deep Vein Thrombosis Protocol - Policy and procedure to prevent blood clots after surgery.

Venous Thrombosis - The NIH has evaluated the evidence from clinical trials it related to people at high risk for the development of venous thromboembolic events.

Vessel Disorders: Thrombosis - Community Outreach Health Information System offers this information to help clear up questions on blood clots.

ThromboSite - For health care professionals with an interest in issues related to thrombosis and hemostasis. Includes background information, message board, case studies, research news, drug information, and related links.

American Thrombosis Association - Features association background and membership details, thrombosis information, and database of articles and article extracts.

Thrombosis Interest Group of Canada - Detailed information on blood clots. Explanations and treatment options.

Deep Vein Thrombosis Hub - A brief definition, followed by links to research articles, overviews, diagnosis and treatment.

Airhealth.org - Provides information about Economy Class Syndrome and offers prevention tips for pilots and passengers, treatment information, research, and a review of how well various airlines inform their passengers of the risks of blood clots from air travel.

Economy Class Syndrome - Features description of risks and symptoms, prevention tips, information about compression hosiery, and links to related articles.

Catching Deep Vein Thrombosis in Time - Case study in diagnosis and treatment of post-surgery deep vein thrombosis.

Yahoo! Groups: Thrombosis - Discussion mailing list for sufferers of deep vein thromboses, pulmonary embolisms, and other vascular disorders.

The Australasian Society of Thrombosis and Haemostasis - Represents clinicians and scientists committed to promoting and fostering knowledge relating to haemostasis. Includes mission, meeting minutes, newsletters, membership information, members-only discussion board, and related links.

British Society for Haemostasis and Thrombosis - Dedicated to the advancement of public education and the promotion of those branches of medical science concerned with haemostasis and thrombosis. Features history, membership information, bursaries, news, and meeting schedule.

The Anticoagulation Forum - A network of health care professionals committed to the therapy of thromboembolic disorders predominantly through anticoagulation. Includes background information, news and events, newsletters, membership information, clinic locations, Powerpoint presentations, and continuing education information.

DVT.org - Features their Best Practices: Preventing Deep Vein Thrombosis and Pulmonary Embolism manual in HTML and PDF formats plus information about the treatment of thrombosis.

Thrombosis and Clotting Disorders Support Group - Chat room and message board for AOL members only. Includes links to related sites.

Patient Regulated or Monitored Oral Anticoagulant Therapy - For professionals who deal with oral anticoagulant therapy and for patients receiving this medical treatment. Features newsletter, events schedule, list of related articles, and clinical trial information.

Carolina Anticoagulation ReSource Group - A network of healthcare providers who manage anticoagulation therapy. Includes mission statement, news, events, membership information, clinic locations, message board, and links.

UCSF Hemostasis and Thrombosis Center - Features information about current research studies such as ELATE and PREVENT, anticogulation and antithrombotic medications, treatment and testing, hypercoagulability factors, and detailed information for patients.

Traditional Chinese Medicine and Cerebral Thrombosis - Describes in detail how TCM practitioners in China solve this with traditional Chinese strategies and herbs.