Yonsei univ, Medical college, Seoul, Korea ( MD 1990 )
Severance hospital,Yonsei University, Cardiac surgery residency, Seoul, Korea ( 1991-4)
Clinical Fellow, Sejong General hospital, Bucheon, Korea ( 1999 )
Clinical Instructor, Sanggye Paik hospital, Inje University, Seoul, Korea ( 2000 )
Assistant professor, Ilsan Paik hospital, Inje University, kyeonggido, Korea(2000-1)
Director of Cardiac surgery, WMBH, Busan, Korea(2001-2004)
Assistant professor, MyongJi hosptal, Kwandong University, Seoul, Korea(2004-2005)
Clinical Fellow, Memorial Hermann hospital, University of Texas, Houston, USA(2006-2008)
Assistant professor, Memorial Hermann hospital, University of Texas, Houston, USA(2008-)
CABG
Aortic surgery