<qa>  What is the final eligibility of the study?- Women who are pregnant, lactating or who refuse to have a pregnancy test will not be eligible for this study. Also, patients with an active infection, or a history of current or previous deep vein thrombosis andor currently receiving anticoagulant therapy for deep vein thrombosis will be excluded from participation in this study. Final eligibility will be determined by the health professionals conducting this trial. 