Prof. Dr. Dar-In Tai received the Ph.D. degree from Chang Gung University, in 2001. From 1990 to 1991, he was a Visiting Scholar at Cell & Molecular Biology, Dana Faber Cancer Institute, Harvard Medical School, Boston. From 2006 to 2010, he was an associate professor at Chang Gung University. Since 2010, he has been a Professor of Medicine at Chang Gung Memorial Hospital. His research interests mainly focus on HCC screening, liver elastography, and HBV genetic polymorphism.