1. Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medical School, Gwangju, Korea.
2. Department of Pediatrics, Chonnam National University Medical School, Gwangju, Korea.
3. Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea.
4. Department of Pharmacology, Chonnam National University Medical School, Gwangju, Korea.