Seoul National University medical school (MD 1976)
National medical center residency (1976-1981)
Military service(1981-1984)
Fellow Korea unvisity Kuro hospital(1984-1985)
lecturor Hanyang university Dept. cardiothoacic surgery
Assistant professor Inje university (1986-
Chief of department of cardiothoracic surgery Paik hospital InJe university (1999-
Research fellow Southwestern medical school U.Texas (1989-1990)