[1] Jikei Univ, Sch Med, Dept Surg, Div Hepatobiliary & Pancreas Surg, 3-25-8 Nishi Shinbashi,Minato Ku, Tokyo 1058461, Japan
[2] Seoul Natl Univ, Coll Med, Dept Surg, Div HBP Surg, Seoul, South Korea
[3] Kumamoto Univ, Grad Sch Med Sci, Dept Pediat Surg & Transplantat, Kumamoto, Japan
[4] Kyoto Univ, Grad Sch Med, Dept Surg, Div Hepatobiliary Pancreat & Transplant Surg, Kyoto, Japan
[5] Kyushu Univ, Grad Sch Med Sci, Dept Surg & Sci, Fukuoka, Japan
[6] Univ Tokyo, Grad Sch Med, Dept Surg, Artificial Organ & Transplantat Div, Tokyo, Japan
[7] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Dept Surg, Seoul, South Korea