Editor of Journal of Digestive Tumors and a member of the Professional Committee of Digestive Tract Tumor Society of China Research Hospital. His expertise is in standard surgery and comprehensive treatment of esophageal cancer, gastric cancer, colorectal and anal cancer, gastrointestinal stromal tumor and inflammatory bowel disease.
Member of the professional committee of gastric cancer of China Anti-cancer Association. Member of Academic Steering Committee of Chinese Anti-cancer society for rehabilitation.Member of the professional committee of gastric cancer and Colorectal Cancer of Guangdong Anti-cancer Association. Member of Guangdong Provincial Physicians Association for Accelerated Rehabilitation Surgery.
Visiting scholar of the National Cancer Institute, Kanazawa University, Japan. Postdoctoral fellow of Ireland Cancer Center at Case Western Reserve University,USA. Vice chairman of the Second Youth Committee of Colorectal Cancer Professional Committee of China Anti-cancer Association.
Professor Liu is a secondary grade chief physician in the Department of Gastroenterology and master supervisor in the First Affiliated Hospital of Sun Yat-Sen University.
As Fellow of the American College of Gastroenterology, Fellow of the International Academy of Proctology, Professor of Internal Medicine, Gastroenterology/Hepatology at the California Northstate University College of Medicine, Clinical Professor of Internal Medicine and Gastroenterology at the University of California, Davis School of Medicine, and clinical faculty
Postdoctoral fellow, University of Texas Southwestern Medical Center, University of Birmingham, UK.
General surgery (national key disciplines, national key clinical specialties), Director of surgery, Director of Gastrointestinal Surgery Center, the First Affiliated Hospital of Sun Yat-sen University（SYSU）; Director of the Center for Diagnosis and Trea
Dr. Zheng studied and worked in the Department of Internal Medicine, the First Affiliated Hospital of Sun Yat-sen University Since 1989. He obtained his Ph.D.
