Dr. Chai received his Ph.D. in Biology from the City University of New York in 1998 and completed his postdoctoral training in molecular medicine at Harvard University in 2001. Then he served the Department of Veterans Affairs of the United States as a Principal Investigator (2002-2016), in affiliation with the School of Medicine, University of California, Irvine, USA. Currently, he is a professor at Baotou Medical College, China. Dr. Chai has published dozens of research articles on various subjects including zoology, cardiovascular biology, gastroenterology, and cancer biology. His current research interest is esophageal cancer.