According to the implications from precedent animal and preliminary studies, the investigators set up the institutional guidelines for use of prosthetic vascular graft during MHV reconstruction of LDLT as follows: use only ringed PTFE graft; choose graft of a larger-caliber (≥1 cm); apply an intervening patch when making an end-to-side anastomosis for MHV branch of the segment 8 (V8); provide a slight redundancy in length; make the IVC-side orifice much larger than the usual; perform flow surveillance more frequently with dynamic CT scan and Doppler ultrasonography; place a stent as soon as any significant luminal narrowing is detected; and keep hypocoagulable state for at least 2 weeks and anti-platelet therapy for 6 months.