6. Serious illness or medical condition(s) including but not limited to the following: a) Congestive heart failure or uncontrolled angina pectoris. Previous history of myocardial infarction within 1 year from study entry, uncontrolled hypertension or dysrhythmias. b) Active infection. c) Unstable diabetes mellitus. d) Psychiatric disorder that may interfere with consent and/or protocol compliance