2015: Doctor of Philosophy (PhD), Chest Surgery, School of Medicine, Sungkyunkwan University, Suwon, Korea 2011: Master of Medicine, Chest Surgery, School of Medicine, Keimyung University, Daegu, Korea 2007: Thoracic and Cardiovascular Surgery, Board Certification 2002: Doctor of Medicine (MD), School of Medicine, Keimyung University, Daegu, Korea