Title Search [BP SY 1-1] Diagnosis & Grading of Acute Cholecystitis Tae-Ho HONG (Department of Surgery, The Catholic Univ. of Korea, Korea, ) [BP SY 1-2] How to avoid bile duct injury Koji ASAI (Surgery, Toho University Ohashi Medical Center, Japan, ) [BP SY 1-3] Proper Timing for Safe Cholecystectomy of Acute Cholecystitis Hyung Jun KWON (Kyungpook National University, Korea, ) [BP SY 1-4] Difficulties in Practical Clinical Application as Junior Staff Jae Yool JANG (Gyeongsang National University, Korea, )