7. Severe, active co-morbidity, defined as follows: Cardiac disease - Congestive heart failure > class II New York Heart Association (NYHA). Patients must not have unstable angina (anginal symptoms at rest) or new onset angina (began within the last 3 months) or myocardial infarction within the past 6 months; Cardiac ventricular arrhythmias requiring anti-arrhythmic therapy; Acute bacterial or fungal infection requiring intravenous antibiotics at the time of registration; Chronic Hepatitis B or C infection;