1. Has any of the following within 6 months prior to study enrollment: myocardial infarction, unstable angina pectoris or uncontrolled angina pectoris, uncontrolled hypertension that is not controllable with antihypertensives, coronary/peripheral artery bypass graft, New York Heart Association (NYHA) class III or IV congestive heart failure, clinically significant peripheral vascular disease (Grade II or greater).