Seoul National University, Medical School (1983-1987)
Seoul National University Hospital Cardiothoracic Residency (1991-1995)
Sejong General Hospital (1995-2003)
Boston Children Hospital Visiting Doctor (1997)
UCSF Visiting Doctor (1997)
Surgeon-in-Chief of Pediatric Cardiac Surgery, Sejong General Hospital
Assistant Professor Seoul National University Hospital
Adult congenital heart disease
Arch reconstruction with regional perfusion
Neonatal surgery
Neurologic injury by circulatory arrest
Early one-stage total reapir of complex congenital heart disease