Platelet count greater than 50,000/mL, absolute granulocyte count (AGC) greater than 1,000/mL, serum creatine less than 1.5 mg/dl (or if greater than 1.5, measured creatine clearance greater than 50mL/min). Any patient with elevated PTT or PT that is uncorrectable will be evaluated by NIH hematology for safety of procedure. This will allow patients with "falsely-elevated" values to undergo the same evaluation that they would have for surgery or other invasive procedure. Dr. Horne is the hematologist and coinvestigator on this protocol.