1. Department of Cell Biology; Second Military Medical University; Shanghai P.R. China
2. Center for Stem Cell and Medicine, Graduate School; Second Military Medical University; Shanghai P.R. China
3. Eastern Hepatobiliary Surgery Hospital; Second Military Medical University; Shanghai P.R. China
4. Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology; Inner Mongolia University; Huhhot P.R. China
5. Department of Medicine, Division of Gastroenterology; University of Pennsylvania; Philadelphia PA USA
6. Department of Laboratory Medicine and Pathology; University of Minnesota; Minneapolis MN USA
7. Hepatoscience Inc; Palo Alto CA USA