- Uncontrolled concurrent illness including, but not limited to ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, myocardial infarction or percutaneous coronary interventions within the last 6 months, cardiac arrhythmia, active autoimmune diseases, or major psychiatric illness/social situations that would limit compliance with study requirements as judged by the primary investigator at each site; those with well controlled, chronic medical conditions under the supervision of the patient's primary physician (i.e. hypertension, hyperlipidemia, coronary heart disease, diabetes mellitus) would not be excluded