Title Search [KAHBPS 1] Prospective Multicenter Observational Analysis for Post-cholecystectomy Complication and Development of Predictive Model in Kore Hyeon Kook Lee (Ewha Womans University, Korea) [KAHBPS 2] Korean Nation-wide Multi-institutional Validation Study of the 8th American Joint Commission on Cancer Staging System in Resected Pancreatic Cancer Chang Moo Kang (Yonsei University, Korea) [KAHBPS 3] Long term Outcomes and Prognostic Factors in Locally Advanced gallbladder cancer: A Retrospective Multicenter Study in Daegu-Kyungpook Hyung Jun Kwon (Kyungpook National University, Korea) [KAHBPS 4] Relevance of the tumor site and node metastasis in patients with intrahepatic cholangiocarcinoma Woohyung Lee (Gyeongsang University, Korea) [KAHBPS 5] Is total pancreatectomy feasible for the treatment of pancreas tumors with reference to its outcome? Multicenter contemporary experience Jun Chul Chung (Soonchunhyang University, Korea) [KAHBPS 6] Unanswered issues on laparoscopic pancreatectomy for pancreatic premalignant and malignant tumors: PNET Ho Kyoung Hwang (Yonsei University, Korea)