1On perihilar surgeryDONG Jia-hong, YANG Shi-zong, FENG Xiao-bin110-1122Application of perihilar surgical techniques in biliary tract surgeryWANG Jian, QUAN Zhi-wei113-1173Advance in the perioperative management: Enhanced recovery after surgery, perioperative surgical home and perioperative medicineZHU Wei-ming, XU Yi-han, LI Jie-shou118-1214Anatomy and clinical significance of hilar plateDAI Chao-liu, JIA Chang-jun122-1265Significance of digital intelligent medical technology in preoperative evaluation of perihepatic hilar biliary tract diseasesFANG Chi-hua, CHEN Qing-shan126-1306Application of perihilar surgical techniques in gallbladder cancer invading hepatic hilumWANG Wei, WANG Jian130-1347Application of perihilar surgical techniques in intrahepatic cholangiocarcinoma invading hepatic hilumCHEN Wei, WANG Jian134-1388Application of perihilar surgical technique in the treatment of central cholangiectasisJI Ru, HUO Feng139-1429Value and evaluation of hilar surgical approach in hilar biliary strictureSHEN Sheng, GONG Zi-jun, LIU Hou-bao143-14510Emphasis on the significance of "short hepatic portal vein" anatomy in perihepatic portal surgeryLI Bin, JIANG Xiao-qing145-14811North China bariatric & metabolic surgery clinical database registry report (2018)149-15412Treatment of gallbladder carcinoma invading porta hepatis with the conventional surgery approach and the transhepatic hilar approach: A retrospective comparative studyYANG Lin-hua, WANG Jian155-161,16713Therapeutic effect analysis of colorectal polyps with diameter≥2.5cm treated by endoscopic submucosal dissection: A report of 567 cases162-16714Analysis of risk factors and intervention measures of esophagojejunal anastomotic leakage in gastric cancer patients after laparoscopic total gastrectomy168-17215Chylous leakage after thyroid cancer surgery with central lymph node dissection: A clinical analysis of 14 cases173-177 