12. [Continued from Criterion 11] (5) PT such that international normalized ratio (INR) is </= 1.5 (or an in-range INR, usually between 2 and 3, if a patient is on a stable dose of therapeutic warfarin) and a PTT </= 1.5 times the institutional upper limit of normal. Patients receiving low molecular weight heparin for the prevention or treatment of venous thromboembolic disease are eligible if considered clinically stable on their regimen.