- Doctor of Medicine
- Gangnam Severance Hospital, Professor, Department of Cardiovascular Surgery
- Ewha Womans University Medical center, Professor, Department of Infectious Diseases
- Yeungnam University Medical Center, Emergency Medicine Physician
- Sangju St. Mary's Hospital, Physician, Department of Thoracic Surgery
- Cheongju Hankook General Hospital, Physician, Department of Thoracic Surgery
- Seoul Heemyung Hospital, Physician, Department of Thoracic Surgery
- Myoung Ju Hospital, Cardiovascular Surgery Department Physician
- Chinju Jeil Hospital, Cardiothoracic Surgery Department Physician
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