Title Search [LV SY 4-1] Defining surgical difficulty of laparoscopic liver resection Go Wakabayashi (Ageo Central General Hospital, Japan) [LV SY 4-2] Standard Technique for Anatomical Laparoscopic Liver Resection Ho-Seong Han (Seoul National University, Korea) [LV SY 4-3] How to shorten learning curve for laparoscopic hepatectomy Chung-Yip Chan (Singapore General Hospital, Singapore) [LV SY 4-4] Laparoscopic versus open living donor right hepatectomy using a propensity score matched analysis : Challenge to 0% of complication Ki-Hun Kim (University of Ulsan, Korea)