2001— :Associate Professor, Northeast Normal University. China.2011-2012: Postdoc. Vanderbilt Univeristy Medical Center, USA.2005-2007: Postdoc. Nagasaki University Dental School/Japan Space Forum, Japan.1998-2001: Postdoc. Osaka University Medical School, Japan.1997-1998: Postdoc. Technical University of Denmark, Denmark.1994-1997: Ph.D. Northeast Normal University, China.1991-1994: M.Sc.. Northeast Normal University, China.1987-1991: B.Sc. Northeast Normal University, China.
