Angelos Hatzakis, MD, PhD, MSc, is Professor of Epidemiology & Preventive Medicine and Director of the Department of Hygiene, Epidemiology & Medical Statistics at Athens University Medical School. He is also Head of the National Retrovirus Reference Center. He has been trained in Internal Medicine (“Hippokratio” General Hospital of Athens) and Epidemiology (Harvard School of Public Health). He has served in many Executive Committees including the presidency of the Hellenic CDC. He is Co-Chair and founder of Hepatitis B and C Public Policy Association. His research interests cover epidemiology, virology and prevention of viral diseases and oncogenic viruses. He is the author or coauthor of more than 200 scientific papers published in journals like Lancet, JAMA, Plos Medicine, British Medical Journal, Annals of Internal Medicine, Proceedings of the National Academy of Science/PNAS, AIDS, Journal of AIDS, Journal of Infectious Diseases, Hepatology, Gastroenterology, Antiviral Therapy, Blood, Cancer Research, Pediatrics etc.