Original Article from The New England Journal of Medicine -- Long-Term, Low-Intensity Warfarin Therapy for the Prevention of Recurrent Venous Thromboembolism
http://content.nejm.org/cgi/content/abstract/NEJMoa035029v1
http://www.brighamandwomens.org/patient/optionalInterpage.asp?rso_abbrev=bwh&item_id=11108&dept_id=7189
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