Prof. Jun Cheng, MD, PhD, is the vice president of Beijing Ditan Hospital, Capital Medical University. Dr. Cheng got his MD in 1986 from First Military Medical University (now Nanfang Medical University), and PhD in 1994 from Beijing Medical University (now Peking University Health Science Center). From 1994 to 1997, Dr. Cheng finished his postdoctoral training in the Department of Infectious Diseases, University of Texas Health Science Center at San Antonio, Texas, USA. Now Dr. Cheng is the Council Member, International Society of Infectious Diseases (ISID); the president of Asia-Pacific Alliance of Liver Diseases (APALD), Beijing; Advisory Board Member, National Committee of Diseases Prevention and Control, Ministry of Health and Family Planning; the president of Chinese Society of Tropical Diseases and Parasitology, Chinese Medical Association; vice president, Society of Infectious Diseases Doctors, Chinese Association of Medical Doctors; editor-in-chief, Infection International; editor-in-chief, Chinese Journal of Experimental and Clinical Infectious Diseases; editor-in-chief, Chinese Journal of Liver Diseases; editor-in-chief, Infection International, editorial board member of International Journal Infectious Diseases, editorial board member of Hepatology International.Dr. Cheng has been engaged in the field of infectious diseases for longer than 32 years. His special interests include clinical treatment of viral hepatitis and basic research on virus-hepatocyte interactions. Dr. Cheng has 148 peer-reviewed papers published.