Dr. Tarek Hassanein-MD. Dr. Hassanein is Professor of Clinical Medicine, Surgery, Tumor Growth, Invasion and Metastasis Program at the University of California-San Diego and the Chief of Clinical Hepatology and Medical Director of Liver Transplant at the UCSD Medical Center . A reviewer for several professional journals, Dr. Hassanein is the Regional Editor for Hepatology-Gastroenterology. Dr. Hassanein is world leader in the area of clinical hepatololgy and liver cancer, He is extensively published and has run multiple clinical trials.