By logging into webINR, each user of this web site agrees to assume the full responsibility for the final decision regarding prescribing the next dose of warfarin and selecting the next INR date. Clinical knowledge of the patient (diet, drug interactions, illness, planned surgery, etc) must be considered. Decision support is provided to guide the user but may be overridden if the clinician disagrees. The use of warfarin therapy for anticoagulation is inherently high risk. The user agrees to hold harmless Abington Memorial Hospital regarding any clinical events based on the clinician's final decision regarding warfarin dosing.