<qa>  What is the international normalized ratio for subjects receiving warfarin?- Current or recent within 10 days prior to Day 0 use of full-dose oral or parenteral anticoagulants or thrombolytic agents except as required to maintain patency of preexisting, permanent indwelling IV catheters; for subjects receiving warfarin, international normalized ratio INR of 1.5; appropriate use of heparin should be discussed with the Medical Monitor 