Serum bilirubin should be ≤ 3.0 mg/dL (biliary stents allowed).
Serum transaminases should be ≤ 5-fold the institutional upper limits.
Patients must not have any co-existing severe medical illnesses, such as unstable angina, uncontrolled diabetes mellitus, uncontrolled arrhythmia or uncontrolled infection.
Patients must be able to sign an informed consent.
