[1] UCLA, David Geffen Sch Med, Dept Radiol, Div Intervent Radiol,Med Ctr, Los Angeles, CA 90095 USA
[2] UCLA, David Geffen Sch Med, Dept Surg, Div Liver & Pancreas Transplant Surg,Med Ctr, Los Angeles, CA 90095 USA
[3] UCLA, David Geffen Sch Med, Dept Anesthesiol, UCLA Simulat Ctr,Med Ctr, Los Angeles, CA 90095 USA
[4] UCLA, Med Ctr, David Geffen Sch Med, 757 Westwood Plaza, Suite 2125, Los Angeles, CA 90095 USA