21. (20. continued) Patients on full-dose anticoagulants (e.g., warfarin) are eligible provided that both of the following criteria are met: (a) Patient has an in-range INR (usually between 2-3) on a stable dose or oral anticoagulant or on a stable dose of low molecular weight heparin. (b) Patient has no active bleeding or pathological condition that carries a high risk of bleeding.