6. Adequate major organ system function as demonstrated by: a. Creatinine < 1.8 mg/dl (or creatinine clearance > 40 ml/min) b. Bilirubin < 1.5 mg/dl except for Gilbert's disease c. ALT < 300 IU/ml d. Left ventricular ejection fraction equal or greater than 40%. e. Pulmonary function test (PFT) demonstrating a diffusion capacity of least 50% predicted, corrected for hemoglobin.