Dr. Cheng on Tumor Heterogeneity in HCC and Challenges for Clinical TrialsByAnn-Lii Cheng, MD, PhDSeptember 15th 2018Ann-Lii Cheng, MD, PhD, distinguished professor and director of the cancer center of National Taiwan University, discusses the challenges that tumor heterogeneity in hepatocellular carcinoma (HCC) pose for clinical trials.